This page provides tables of sample size required to establich a Cronbach's Alpha. The tables are in 3
levels of power (0.8, 0.9, and 0.95) and 4 levels of probabilities of Type I Error (α) (0.1, 0.05, 0.01, and 0.001),
for reliabilities from 3 to 15 variables, at Cronbach Alpha values at 0.02 intervals.
Sample size for both one tail and two tail models are provided, but most researchers use the one tail model as they
are interested only in testing against the null hypothesis.
Power=0.8
Power=0.9
Power=0.95
α=0.1
α=0.05
α=0.01
α=0.001
Power=0.8 :
Probability of Type I Error (α)=0.1 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 33136 | 45446 | 29455 | 40397 | 27614 | 37872 | 26509 | 36357 | 25773 | 35347 | 25247 | 34626 | 24853 | 34085 | 24546 | 33664 | 24300 | 33328 | 24100 | 33052 | 23932 | 32823 | 23791 | 32629 | 23669 | 32462 |
0.04 | 8118 | 11133 | 7216 | 9896 | 6765 | 9278 | 6495 | 8907 | 6314 | 8659 | 6186 | 8483 | 6089 | 8350 | 6014 | 8247 | 5954 | 8165 | 5904 | 8097 | 5863 | 8041 | 5829 | 7993 | 5799 | 7953 |
0.06 | 3535 | 4847 | 3142 | 4309 | 2946 | 4040 | 2828 | 3878 | 2750 | 3770 | 2694 | 3694 | 2652 | 3636 | 2619 | 3591 | 2593 | 3555 | 2571 | 3526 | 2554 | 3501 | 2538 | 3481 | 2526 | 3463 |
0.08 | 1948 | 2670 | 1731 | 2374 | 1623 | 2226 | 1559 | 2137 | 1515 | 2077 | 1484 | 2035 | 1461 | 2003 | 1443 | 1979 | 1429 | 1959 | 1417 | 1943 | 1407 | 1929 | 1399 | 1918 | 1392 | 1908 |
0.10 | 1221 | 1673 | 1085 | 1488 | 1018 | 1395 | 977 | 1339 | 950 | 1302 | 931 | 1276 | 916 | 1256 | 905 | 1240 | 896 | 1228 | 888 | 1218 | 882 | 1209 | 877 | 1202 | 873 | 1196 |
0.12 | 830 | 1138 | 738 | 1011 | 692 | 948 | 665 | 911 | 646 | 885 | 633 | 867 | 623 | 854 | 616 | 843 | 609 | 835 | 604 | 828 | 600 | 822 | 597 | 817 | 594 | 813 |
0.14 | 597 | 818 | 531 | 727 | 498 | 682 | 478 | 655 | 465 | 637 | 455 | 624 | 448 | 614 | 443 | 606 | 438 | 600 | 435 | 595 | 432 | 591 | 429 | 588 | 427 | 585 |
0.16 | 447 | 613 | 398 | 545 | 373 | 511 | 358 | 491 | 349 | 477 | 341 | 467 | 336 | 460 | 332 | 454 | 329 | 450 | 326 | 446 | 324 | 443 | 322 | 441 | 320 | 438 |
0.18 | 346 | 473 | 308 | 421 | 289 | 395 | 277 | 379 | 270 | 369 | 264 | 361 | 260 | 356 | 257 | 351 | 254 | 348 | 252 | 345 | 251 | 343 | 249 | 341 | 248 | 339 |
0.20 | 274 | 375 | 244 | 334 | 229 | 313 | 220 | 300 | 214 | 292 | 209 | 286 | 206 | 282 | 204 | 278 | 202 | 276 | 200 | 273 | 199 | 272 | 197 | 270 | 196 | 269 |
0.22 | 222 | 303 | 197 | 270 | 185 | 253 | 178 | 243 | 173 | 236 | 169 | 231 | 167 | 228 | 165 | 225 | 163 | 223 | 162 | 221 | 161 | 219 | 160 | 218 | 159 | 217 |
0.24 | 182 | 249 | 162 | 221 | 152 | 208 | 146 | 200 | 142 | 194 | 139 | 190 | 137 | 187 | 136 | 185 | 134 | 183 | 133 | 182 | 132 | 180 | 131 | 179 | 131 | 178 |
0.26 | 152 | 207 | 135 | 184 | 127 | 173 | 122 | 166 | 119 | 162 | 116 | 158 | 114 | 156 | 113 | 154 | 112 | 153 | 111 | 151 | 110 | 150 | 110 | 149 | 109 | 149 |
0.28 | 128 | 174 | 114 | 155 | 107 | 146 | 103 | 140 | 100 | 136 | 98 | 133 | 96 | 131 | 95 | 130 | 94 | 129 | 94 | 127 | 93 | 127 | 92 | 126 | 92 | 125 |
0.30 | 109 | 148 | 97 | 132 | 91 | 124 | 88 | 119 | 85 | 116 | 83 | 114 | 82 | 112 | 81 | 110 | 80 | 109 | 80 | 109 | 79 | 108 | 79 | 107 | 78 | 107 |
0.32 | 93 | 127 | 83 | 113 | 78 | 106 | 75 | 102 | 73 | 99 | 72 | 98 | 71 | 96 | 70 | 95 | 69 | 94 | 69 | 93 | 68 | 93 | 68 | 92 | 67 | 92 |
0.34 | 81 | 110 | 72 | 98 | 68 | 92 | 65 | 88 | 63 | 86 | 62 | 84 | 61 | 83 | 61 | 82 | 60 | 81 | 59 | 81 | 59 | 80 | 59 | 80 | 58 | 79 |
0.36 | 70 | 96 | 63 | 85 | 59 | 80 | 57 | 77 | 55 | 75 | 54 | 73 | 53 | 72 | 53 | 71 | 52 | 71 | 52 | 70 | 52 | 70 | 51 | 69 | 51 | 69 |
0.38 | 62 | 84 | 55 | 75 | 52 | 70 | 50 | 67 | 49 | 66 | 48 | 64 | 47 | 63 | 46 | 63 | 46 | 62 | 46 | 62 | 45 | 61 | 45 | 61 | 45 | 60 |
0.40 | 54 | 74 | 49 | 66 | 46 | 62 | 44 | 59 | 43 | 58 | 42 | 57 | 41 | 56 | 41 | 55 | 41 | 55 | 40 | 54 | 40 | 54 | 40 | 54 | 40 | 53 |
0.42 | 48 | 65 | 43 | 58 | 40 | 55 | 39 | 53 | 38 | 51 | 37 | 50 | 37 | 49 | 36 | 49 | 36 | 48 | 36 | 48 | 35 | 48 | 35 | 47 | 35 | 47 |
0.44 | 43 | 58 | 38 | 52 | 36 | 48 | 35 | 47 | 34 | 45 | 33 | 45 | 33 | 44 | 32 | 43 | 32 | 43 | 32 | 43 | 32 | 42 | 31 | 42 | 31 | 42 |
0.46 | 38 | 51 | 34 | 46 | 32 | 43 | 31 | 42 | 30 | 40 | 30 | 40 | 29 | 39 | 29 | 39 | 29 | 38 | 28 | 38 | 28 | 38 | 28 | 38 | 28 | 37 |
0.48 | 34 | 46 | 31 | 41 | 29 | 39 | 28 | 37 | 27 | 36 | 27 | 36 | 26 | 35 | 26 | 35 | 26 | 34 | 25 | 34 | 25 | 34 | 25 | 34 | 25 | 33 |
0.50 | 31 | 41 | 28 | 37 | 26 | 35 | 25 | 33 | 24 | 33 | 24 | 32 | 24 | 31 | 23 | 31 | 23 | 31 | 23 | 31 | 23 | 30 | 23 | 30 | 23 | 30 |
0.52 | 28 | 37 | 25 | 33 | 23 | 31 | 23 | 30 | 22 | 29 | 22 | 29 | 21 | 28 | 21 | 28 | 21 | 28 | 21 | 28 | 21 | 27 | 21 | 27 | 20 | 27 |
0.54 | 25 | 33 | 22 | 30 | 21 | 28 | 20 | 27 | 20 | 26 | 20 | 26 | 19 | 26 | 19 | 25 | 19 | 25 | 19 | 25 | 19 | 25 | 19 | 25 | 19 | 24 |
0.56 | 23 | 30 | 20 | 27 | 19 | 25 | 19 | 25 | 18 | 24 | 18 | 23 | 18 | 23 | 17 | 23 | 17 | 23 | 17 | 23 | 17 | 22 | 17 | 22 | 17 | 22 |
0.58 | 20 | 27 | 18 | 24 | 17 | 23 | 17 | 22 | 16 | 22 | 16 | 21 | 16 | 21 | 16 | 21 | 16 | 21 | 16 | 20 | 15 | 20 | 15 | 20 | 15 | 20 |
0.60 | 19 | 25 | 17 | 22 | 16 | 21 | 15 | 20 | 15 | 20 | 15 | 19 | 15 | 19 | 14 | 19 | 14 | 19 | 14 | 19 | 14 | 18 | 14 | 18 | 14 | 18 |
0.62 | 17 | 22 | 15 | 20 | 15 | 19 | 14 | 18 | 14 | 18 | 14 | 18 | 13 | 17 | 13 | 17 | 13 | 17 | 13 | 17 | 13 | 17 | 13 | 17 | 13 | 17 |
0.64 | 15 | 20 | 14 | 18 | 13 | 17 | 13 | 17 | 13 | 16 | 12 | 16 | 12 | 16 | 12 | 16 | 12 | 16 | 12 | 15 | 12 | 15 | 12 | 15 | 12 | 15 |
0.66 | 14 | 18 | 13 | 17 | 12 | 16 | 12 | 15 | 12 | 15 | 11 | 15 | 11 | 14 | 11 | 14 | 11 | 14 | 11 | 14 | 11 | 14 | 11 | 14 | 11 | 14 |
0.68 | 13 | 17 | 12 | 15 | 11 | 14 | 11 | 14 | 11 | 14 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 |
0.70 | 12 | 15 | 11 | 14 | 10 | 13 | 10 | 13 | 10 | 12 | 10 | 12 | 9 | 12 | 9 | 12 | 9 | 12 | 9 | 12 | 9 | 12 | 9 | 12 | 9 | 12 |
0.72 | 11 | 14 | 10 | 13 | 9 | 12 | 9 | 12 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 8 | 11 | 8 | 11 |
0.74 | 10 | 13 | 9 | 12 | 9 | 11 | 8 | 11 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 |
0.76 | 9 | 12 | 8 | 11 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 |
0.78 | 8 | 11 | 8 | 10 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.80 | 8 | 10 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 6 | 8 | 6 | 8 | 6 | 8 | 6 | 8 | 6 | 8 | 6 | 8 | 6 | 8 | 6 | 8 |
0.82 | 7 | 9 | 7 | 8 | 6 | 8 | 6 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.84 | 7 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 5 | 7 | 5 | 7 | 5 | 7 | 5 | 6 | 5 | 6 | 5 | 6 |
0.86 | 6 | 7 | 6 | 7 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.88 | 6 | 7 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 |
0.90 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
0.92 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
0.94 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
0.96 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 |
0.98 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Power=0.8 :
Probability of Type I Error (α)=0.05 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 45446 | 57693 | 40397 | 51283 | 37872 | 48078 | 36357 | 46155 | 35347 | 44873 | 34626 | 43957 | 34085 | 43271 | 33664 | 42736 | 33328 | 42309 | 33052 | 41959 | 32823 | 41668 | 32629 | 41421 | 32462 | 41210 |
0.04 | 11133 | 14132 | 9896 | 12562 | 9278 | 11777 | 8907 | 11306 | 8659 | 10992 | 8483 | 10768 | 8350 | 10600 | 8247 | 10469 | 8165 | 10364 | 8097 | 10279 | 8041 | 10207 | 7993 | 10147 | 7953 | 10095 |
0.06 | 4847 | 6153 | 4309 | 5469 | 4040 | 5128 | 3878 | 4923 | 3770 | 4786 | 3694 | 4688 | 3636 | 4615 | 3591 | 4558 | 3555 | 4513 | 3526 | 4475 | 3501 | 4444 | 3481 | 4418 | 3463 | 4395 |
0.08 | 2670 | 3389 | 2374 | 3013 | 2226 | 2825 | 2137 | 2712 | 2077 | 2637 | 2035 | 2583 | 2003 | 2543 | 1979 | 2511 | 1959 | 2486 | 1943 | 2466 | 1929 | 2448 | 1918 | 2434 | 1908 | 2422 |
0.10 | 1673 | 2124 | 1488 | 1888 | 1395 | 1770 | 1339 | 1699 | 1302 | 1652 | 1276 | 1619 | 1256 | 1593 | 1240 | 1574 | 1228 | 1558 | 1218 | 1545 | 1209 | 1534 | 1202 | 1525 | 1196 | 1518 |
0.12 | 1138 | 1443 | 1011 | 1283 | 948 | 1203 | 911 | 1155 | 885 | 1123 | 867 | 1100 | 854 | 1083 | 843 | 1070 | 835 | 1059 | 828 | 1050 | 822 | 1043 | 817 | 1037 | 813 | 1032 |
0.14 | 818 | 1038 | 727 | 923 | 682 | 865 | 655 | 831 | 637 | 808 | 624 | 791 | 614 | 779 | 606 | 769 | 600 | 762 | 595 | 755 | 591 | 750 | 588 | 746 | 585 | 742 |
0.16 | 613 | 777 | 545 | 691 | 511 | 648 | 491 | 622 | 477 | 605 | 467 | 593 | 460 | 583 | 454 | 576 | 450 | 571 | 446 | 566 | 443 | 562 | 441 | 559 | 438 | 556 |
0.18 | 473 | 600 | 421 | 534 | 395 | 501 | 379 | 481 | 369 | 468 | 361 | 458 | 356 | 451 | 351 | 445 | 348 | 441 | 345 | 437 | 343 | 434 | 341 | 432 | 339 | 430 |
0.20 | 375 | 475 | 334 | 423 | 313 | 397 | 300 | 381 | 292 | 370 | 286 | 363 | 282 | 357 | 278 | 353 | 276 | 349 | 273 | 346 | 272 | 344 | 270 | 342 | 269 | 340 |
0.22 | 303 | 384 | 270 | 342 | 253 | 320 | 243 | 308 | 236 | 299 | 231 | 293 | 228 | 289 | 225 | 285 | 223 | 282 | 221 | 280 | 219 | 278 | 218 | 276 | 217 | 275 |
0.24 | 249 | 315 | 221 | 280 | 208 | 263 | 200 | 253 | 194 | 246 | 190 | 241 | 187 | 237 | 185 | 234 | 183 | 232 | 182 | 230 | 180 | 228 | 179 | 227 | 178 | 226 |
0.26 | 207 | 262 | 184 | 233 | 173 | 219 | 166 | 210 | 162 | 204 | 158 | 200 | 156 | 197 | 154 | 195 | 153 | 193 | 151 | 191 | 150 | 190 | 149 | 189 | 149 | 188 |
0.28 | 174 | 221 | 155 | 196 | 146 | 184 | 140 | 177 | 136 | 172 | 133 | 169 | 131 | 166 | 130 | 164 | 129 | 163 | 127 | 161 | 127 | 160 | 126 | 159 | 125 | 158 |
0.30 | 148 | 188 | 132 | 167 | 124 | 157 | 119 | 151 | 116 | 146 | 114 | 144 | 112 | 141 | 110 | 140 | 109 | 138 | 109 | 137 | 108 | 136 | 107 | 135 | 107 | 135 |
0.32 | 127 | 161 | 113 | 143 | 106 | 134 | 102 | 129 | 99 | 126 | 98 | 123 | 96 | 121 | 95 | 120 | 94 | 119 | 93 | 118 | 93 | 117 | 92 | 116 | 92 | 116 |
0.34 | 110 | 139 | 98 | 124 | 92 | 116 | 88 | 112 | 86 | 109 | 84 | 106 | 83 | 105 | 82 | 104 | 81 | 103 | 81 | 102 | 80 | 101 | 80 | 100 | 79 | 100 |
0.36 | 96 | 121 | 85 | 108 | 80 | 101 | 77 | 97 | 75 | 94 | 73 | 93 | 72 | 91 | 71 | 90 | 71 | 89 | 70 | 88 | 70 | 88 | 69 | 87 | 69 | 87 |
0.38 | 84 | 106 | 75 | 94 | 70 | 88 | 67 | 85 | 66 | 83 | 64 | 81 | 63 | 80 | 63 | 79 | 62 | 78 | 62 | 77 | 61 | 77 | 61 | 76 | 60 | 76 |
0.40 | 74 | 93 | 66 | 83 | 62 | 78 | 59 | 75 | 58 | 73 | 57 | 71 | 56 | 70 | 55 | 69 | 55 | 69 | 54 | 68 | 54 | 68 | 54 | 67 | 53 | 67 |
0.42 | 65 | 82 | 58 | 73 | 55 | 69 | 53 | 66 | 51 | 64 | 50 | 63 | 49 | 62 | 49 | 61 | 48 | 61 | 48 | 60 | 48 | 60 | 47 | 59 | 47 | 59 |
0.44 | 58 | 73 | 52 | 65 | 48 | 61 | 47 | 59 | 45 | 57 | 45 | 56 | 44 | 55 | 43 | 54 | 43 | 54 | 43 | 53 | 42 | 53 | 42 | 53 | 42 | 53 |
0.46 | 51 | 65 | 46 | 58 | 43 | 54 | 42 | 52 | 40 | 51 | 40 | 50 | 39 | 49 | 39 | 48 | 38 | 48 | 38 | 48 | 38 | 47 | 38 | 47 | 37 | 47 |
0.48 | 46 | 58 | 41 | 51 | 39 | 48 | 37 | 47 | 36 | 45 | 36 | 44 | 35 | 44 | 35 | 43 | 34 | 43 | 34 | 43 | 34 | 42 | 34 | 42 | 33 | 42 |
0.50 | 41 | 52 | 37 | 46 | 35 | 43 | 33 | 42 | 33 | 41 | 32 | 40 | 31 | 39 | 31 | 39 | 31 | 38 | 31 | 38 | 30 | 38 | 30 | 38 | 30 | 38 |
0.52 | 37 | 46 | 33 | 41 | 31 | 39 | 30 | 37 | 29 | 36 | 29 | 36 | 28 | 35 | 28 | 35 | 28 | 35 | 28 | 34 | 27 | 34 | 27 | 34 | 27 | 34 |
0.54 | 33 | 42 | 30 | 37 | 28 | 35 | 27 | 34 | 26 | 33 | 26 | 32 | 26 | 32 | 25 | 31 | 25 | 31 | 25 | 31 | 25 | 31 | 25 | 31 | 24 | 30 |
0.56 | 30 | 37 | 27 | 34 | 25 | 32 | 25 | 30 | 24 | 30 | 23 | 29 | 23 | 29 | 23 | 28 | 23 | 28 | 23 | 28 | 22 | 28 | 22 | 28 | 22 | 27 |
0.58 | 27 | 34 | 24 | 30 | 23 | 29 | 22 | 28 | 22 | 27 | 21 | 26 | 21 | 26 | 21 | 26 | 21 | 25 | 20 | 25 | 20 | 25 | 20 | 25 | 20 | 25 |
0.60 | 25 | 31 | 22 | 27 | 21 | 26 | 20 | 25 | 20 | 24 | 19 | 24 | 19 | 24 | 19 | 23 | 19 | 23 | 19 | 23 | 18 | 23 | 18 | 23 | 18 | 23 |
0.62 | 22 | 28 | 20 | 25 | 19 | 23 | 18 | 23 | 18 | 22 | 18 | 22 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 20 |
0.64 | 20 | 25 | 18 | 23 | 17 | 21 | 17 | 21 | 16 | 20 | 16 | 20 | 16 | 19 | 16 | 19 | 16 | 19 | 15 | 19 | 15 | 19 | 15 | 19 | 15 | 19 |
0.66 | 18 | 23 | 17 | 20 | 16 | 19 | 15 | 19 | 15 | 18 | 15 | 18 | 14 | 18 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 |
0.68 | 17 | 21 | 15 | 19 | 14 | 18 | 14 | 17 | 14 | 17 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 15 |
0.70 | 15 | 19 | 14 | 17 | 13 | 16 | 13 | 15 | 12 | 15 | 12 | 15 | 12 | 15 | 12 | 15 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 |
0.72 | 14 | 17 | 13 | 15 | 12 | 15 | 12 | 14 | 11 | 14 | 11 | 14 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 |
0.74 | 13 | 15 | 12 | 14 | 11 | 13 | 11 | 13 | 10 | 13 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 |
0.76 | 12 | 14 | 11 | 13 | 10 | 12 | 10 | 12 | 10 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 |
0.78 | 11 | 13 | 10 | 12 | 9 | 11 | 9 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 |
0.80 | 10 | 12 | 9 | 11 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 |
0.82 | 9 | 11 | 8 | 10 | 8 | 9 | 8 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.84 | 8 | 10 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 6 | 8 | 6 | 8 | 6 | 8 |
0.86 | 7 | 9 | 7 | 8 | 6 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.88 | 7 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.90 | 6 | 7 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.92 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
0.94 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
0.96 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
0.98 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 |
Power=0.8 :
Probability of Type I Error (α)=0.01 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 73769 | 85844 | 65573 | 76306 | 61475 | 71537 | 59016 | 68676 | 57377 | 66768 | 56206 | 65406 | 55328 | 64384 | 54645 | 63589 | 54098 | 62953 | 53651 | 62433 | 53279 | 61999 | 52963 | 61633 | 52693 | 61318 |
0.04 | 18070 | 21027 | 16062 | 18691 | 15059 | 17523 | 14456 | 16822 | 14055 | 16355 | 13768 | 16021 | 13553 | 15771 | 13386 | 15576 | 13252 | 15421 | 13142 | 15293 | 13051 | 15187 | 12974 | 15097 | 12908 | 15020 |
0.06 | 7867 | 9154 | 6993 | 8137 | 6556 | 7629 | 6294 | 7324 | 6119 | 7120 | 5994 | 6975 | 5901 | 6866 | 5828 | 6781 | 5769 | 6713 | 5722 | 6658 | 5682 | 6612 | 5648 | 6573 | 5620 | 6539 |
0.08 | 4333 | 5042 | 3852 | 4482 | 3611 | 4202 | 3467 | 4034 | 3371 | 3922 | 3302 | 3842 | 3250 | 3782 | 3210 | 3735 | 3178 | 3698 | 3152 | 3668 | 3130 | 3642 | 3112 | 3621 | 3096 | 3602 |
0.10 | 2715 | 3159 | 2413 | 2808 | 2263 | 2633 | 2172 | 2527 | 2112 | 2457 | 2069 | 2407 | 2037 | 2370 | 2012 | 2340 | 1991 | 2317 | 1975 | 2298 | 1961 | 2282 | 1950 | 2268 | 1940 | 2257 |
0.12 | 1845 | 2147 | 1640 | 1908 | 1538 | 1789 | 1476 | 1718 | 1436 | 1670 | 1406 | 1636 | 1384 | 1611 | 1367 | 1591 | 1354 | 1575 | 1342 | 1562 | 1333 | 1551 | 1325 | 1542 | 1319 | 1534 |
0.14 | 1326 | 1543 | 1179 | 1372 | 1105 | 1286 | 1061 | 1235 | 1032 | 1200 | 1011 | 1176 | 995 | 1158 | 983 | 1143 | 973 | 1132 | 965 | 1123 | 958 | 1115 | 953 | 1108 | 948 | 1103 |
0.16 | 993 | 1155 | 883 | 1027 | 828 | 963 | 795 | 925 | 773 | 899 | 757 | 881 | 745 | 867 | 736 | 856 | 729 | 848 | 723 | 841 | 718 | 835 | 714 | 830 | 710 | 826 |
0.18 | 767 | 892 | 682 | 793 | 640 | 744 | 614 | 714 | 597 | 694 | 585 | 680 | 576 | 670 | 569 | 661 | 563 | 655 | 558 | 650 | 555 | 645 | 551 | 641 | 549 | 638 |
0.20 | 607 | 706 | 540 | 628 | 506 | 589 | 486 | 565 | 473 | 550 | 463 | 539 | 456 | 530 | 450 | 524 | 446 | 519 | 442 | 514 | 439 | 511 | 437 | 508 | 434 | 505 |
0.22 | 490 | 570 | 436 | 507 | 409 | 475 | 393 | 457 | 382 | 444 | 374 | 435 | 368 | 428 | 364 | 423 | 360 | 419 | 357 | 415 | 355 | 412 | 353 | 410 | 351 | 408 |
0.24 | 402 | 468 | 358 | 416 | 336 | 390 | 322 | 375 | 313 | 364 | 307 | 357 | 302 | 351 | 299 | 347 | 296 | 344 | 293 | 341 | 291 | 338 | 290 | 336 | 288 | 335 |
0.26 | 335 | 389 | 298 | 346 | 279 | 325 | 268 | 312 | 261 | 303 | 256 | 297 | 252 | 292 | 248 | 289 | 246 | 286 | 244 | 284 | 242 | 282 | 241 | 280 | 240 | 279 |
0.28 | 281 | 327 | 250 | 291 | 235 | 273 | 226 | 262 | 219 | 255 | 215 | 250 | 212 | 246 | 209 | 243 | 207 | 241 | 205 | 239 | 204 | 237 | 203 | 236 | 202 | 234 |
0.30 | 239 | 278 | 213 | 247 | 200 | 232 | 192 | 223 | 187 | 217 | 183 | 212 | 180 | 209 | 178 | 207 | 176 | 204 | 175 | 203 | 173 | 201 | 172 | 200 | 172 | 199 |
0.32 | 205 | 238 | 182 | 212 | 171 | 199 | 164 | 191 | 160 | 186 | 157 | 182 | 154 | 179 | 152 | 177 | 151 | 175 | 150 | 174 | 149 | 173 | 148 | 172 | 147 | 171 |
0.34 | 177 | 205 | 158 | 183 | 148 | 172 | 142 | 165 | 138 | 160 | 135 | 157 | 133 | 155 | 132 | 153 | 130 | 151 | 129 | 150 | 128 | 149 | 128 | 148 | 127 | 147 |
0.36 | 154 | 178 | 137 | 159 | 128 | 149 | 123 | 143 | 120 | 139 | 118 | 137 | 116 | 134 | 114 | 133 | 113 | 132 | 112 | 130 | 112 | 130 | 111 | 129 | 110 | 128 |
0.38 | 134 | 156 | 120 | 139 | 112 | 130 | 108 | 125 | 105 | 122 | 103 | 119 | 101 | 117 | 100 | 116 | 99 | 115 | 98 | 114 | 98 | 113 | 97 | 113 | 97 | 112 |
0.40 | 118 | 137 | 105 | 122 | 99 | 114 | 95 | 110 | 92 | 107 | 90 | 105 | 89 | 103 | 88 | 102 | 87 | 101 | 86 | 100 | 86 | 99 | 85 | 99 | 85 | 98 |
0.42 | 104 | 121 | 93 | 107 | 87 | 101 | 84 | 97 | 81 | 94 | 80 | 92 | 79 | 91 | 78 | 90 | 77 | 89 | 76 | 88 | 76 | 88 | 75 | 87 | 75 | 87 |
0.44 | 92 | 107 | 82 | 95 | 77 | 89 | 74 | 86 | 72 | 84 | 71 | 82 | 70 | 81 | 69 | 80 | 68 | 79 | 68 | 78 | 67 | 78 | 67 | 77 | 66 | 77 |
0.46 | 82 | 95 | 73 | 85 | 69 | 79 | 66 | 76 | 64 | 74 | 63 | 73 | 62 | 72 | 61 | 71 | 61 | 70 | 60 | 70 | 60 | 69 | 59 | 69 | 59 | 68 |
0.48 | 73 | 84 | 65 | 75 | 61 | 71 | 59 | 68 | 57 | 66 | 56 | 65 | 55 | 64 | 55 | 63 | 54 | 63 | 54 | 62 | 53 | 62 | 53 | 61 | 53 | 61 |
0.50 | 65 | 75 | 58 | 67 | 55 | 63 | 53 | 61 | 51 | 59 | 50 | 58 | 49 | 57 | 49 | 57 | 48 | 56 | 48 | 56 | 48 | 55 | 47 | 55 | 47 | 55 |
0.52 | 58 | 68 | 52 | 60 | 49 | 57 | 47 | 55 | 46 | 53 | 45 | 52 | 44 | 51 | 44 | 51 | 43 | 50 | 43 | 50 | 43 | 49 | 43 | 49 | 42 | 49 |
0.54 | 52 | 61 | 47 | 54 | 44 | 51 | 42 | 49 | 41 | 48 | 41 | 47 | 40 | 46 | 39 | 46 | 39 | 45 | 39 | 45 | 39 | 44 | 38 | 44 | 38 | 44 |
0.56 | 47 | 54 | 42 | 49 | 40 | 46 | 38 | 44 | 37 | 43 | 37 | 42 | 36 | 41 | 36 | 41 | 35 | 41 | 35 | 40 | 35 | 40 | 35 | 40 | 34 | 40 |
0.58 | 43 | 49 | 38 | 44 | 36 | 41 | 35 | 40 | 34 | 39 | 33 | 38 | 33 | 37 | 32 | 37 | 32 | 37 | 32 | 36 | 31 | 36 | 31 | 36 | 31 | 36 |
0.60 | 38 | 44 | 34 | 40 | 32 | 37 | 31 | 36 | 30 | 35 | 30 | 34 | 29 | 34 | 29 | 33 | 29 | 33 | 29 | 33 | 28 | 33 | 28 | 32 | 28 | 32 |
0.62 | 35 | 40 | 31 | 36 | 29 | 34 | 28 | 32 | 28 | 32 | 27 | 31 | 27 | 31 | 26 | 30 | 26 | 30 | 26 | 30 | 26 | 30 | 26 | 29 | 25 | 29 |
0.64 | 31 | 36 | 28 | 32 | 27 | 30 | 26 | 29 | 25 | 29 | 24 | 28 | 24 | 28 | 24 | 27 | 24 | 27 | 23 | 27 | 23 | 27 | 23 | 27 | 23 | 26 |
0.66 | 28 | 33 | 25 | 29 | 24 | 28 | 23 | 27 | 23 | 26 | 22 | 25 | 22 | 25 | 22 | 25 | 21 | 25 | 21 | 24 | 21 | 24 | 21 | 24 | 21 | 24 |
0.68 | 26 | 29 | 23 | 26 | 22 | 25 | 21 | 24 | 21 | 23 | 20 | 23 | 20 | 23 | 20 | 22 | 20 | 22 | 19 | 22 | 19 | 22 | 19 | 22 | 19 | 22 |
0.70 | 23 | 27 | 21 | 24 | 20 | 23 | 19 | 22 | 19 | 21 | 18 | 21 | 18 | 21 | 18 | 20 | 18 | 20 | 18 | 20 | 18 | 20 | 17 | 20 | 17 | 20 |
0.72 | 21 | 24 | 19 | 22 | 18 | 21 | 17 | 20 | 17 | 19 | 17 | 19 | 16 | 19 | 16 | 19 | 16 | 18 | 16 | 18 | 16 | 18 | 16 | 18 | 16 | 18 |
0.74 | 19 | 22 | 17 | 20 | 16 | 19 | 16 | 18 | 15 | 18 | 15 | 17 | 15 | 17 | 15 | 17 | 15 | 17 | 15 | 17 | 14 | 16 | 14 | 16 | 14 | 16 |
0.76 | 17 | 20 | 16 | 18 | 15 | 17 | 14 | 16 | 14 | 16 | 14 | 16 | 14 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 |
0.78 | 16 | 18 | 14 | 16 | 13 | 15 | 13 | 15 | 13 | 14 | 13 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 13 | 12 | 13 |
0.80 | 14 | 16 | 13 | 15 | 12 | 14 | 12 | 13 | 12 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 |
0.82 | 13 | 14 | 12 | 13 | 11 | 12 | 11 | 12 | 10 | 12 | 10 | 12 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.84 | 11 | 13 | 10 | 12 | 10 | 11 | 10 | 11 | 9 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 |
0.86 | 10 | 12 | 9 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 |
0.88 | 9 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 8 | 8 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.90 | 8 | 9 | 8 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
0.92 | 7 | 8 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
0.94 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.96 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
0.98 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Power=0.8 :
Probability of Type I Error (α)=0.001 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 113632 | 125504 | 101007 | 111560 | 94694 | 104587 | 90906 | 100404 | 88381 | 97615 | 86578 | 95623 | 85225 | 94129 | 84173 | 92967 | 83331 | 92037 | 82642 | 91277 | 82068 | 90643 | 81583 | 90106 | 81167 | 89647 |
0.04 | 27833 | 30741 | 24741 | 27326 | 23195 | 25618 | 22267 | 24593 | 21649 | 23910 | 21207 | 23422 | 20875 | 23056 | 20618 | 22772 | 20412 | 22544 | 20243 | 22358 | 20102 | 22202 | 19983 | 22071 | 19882 | 21958 |
0.06 | 12116 | 13382 | 10770 | 11895 | 10097 | 11152 | 9693 | 10706 | 9424 | 10409 | 9232 | 10196 | 9088 | 10037 | 8976 | 9913 | 8886 | 9814 | 8812 | 9733 | 8751 | 9665 | 8699 | 9608 | 8655 | 9559 |
0.08 | 6673 | 7370 | 5932 | 6552 | 5561 | 6142 | 5339 | 5897 | 5191 | 5733 | 5085 | 5616 | 5006 | 5528 | 4944 | 5460 | 4894 | 5405 | 4854 | 5361 | 4820 | 5324 | 4792 | 5292 | 4767 | 5265 |
0.10 | 4180 | 4617 | 3716 | 4104 | 3484 | 3848 | 3345 | 3694 | 3252 | 3591 | 3186 | 3518 | 3136 | 3463 | 3097 | 3421 | 3066 | 3386 | 3041 | 3358 | 3020 | 3335 | 3002 | 3315 | 2987 | 3298 |
0.12 | 2841 | 3137 | 2525 | 2789 | 2368 | 2615 | 2273 | 2510 | 2210 | 2441 | 2165 | 2391 | 2131 | 2353 | 2105 | 2324 | 2084 | 2301 | 2067 | 2282 | 2052 | 2266 | 2040 | 2253 | 2030 | 2241 |
0.14 | 2041 | 2254 | 1815 | 2004 | 1702 | 1879 | 1634 | 1804 | 1588 | 1754 | 1556 | 1718 | 1532 | 1691 | 1513 | 1671 | 1498 | 1654 | 1485 | 1640 | 1475 | 1629 | 1466 | 1619 | 1459 | 1611 |
0.16 | 1528 | 1688 | 1359 | 1500 | 1274 | 1407 | 1223 | 1351 | 1189 | 1313 | 1165 | 1286 | 1147 | 1266 | 1133 | 1251 | 1121 | 1238 | 1112 | 1228 | 1104 | 1219 | 1098 | 1212 | 1092 | 1206 |
0.18 | 1180 | 1303 | 1049 | 1159 | 984 | 1086 | 945 | 1043 | 918 | 1014 | 900 | 993 | 886 | 978 | 875 | 966 | 866 | 956 | 859 | 948 | 853 | 942 | 848 | 936 | 844 | 932 |
0.20 | 934 | 1031 | 830 | 917 | 779 | 860 | 748 | 825 | 727 | 803 | 712 | 786 | 701 | 774 | 692 | 765 | 686 | 757 | 680 | 751 | 675 | 745 | 671 | 741 | 668 | 737 |
0.22 | 754 | 832 | 670 | 740 | 629 | 694 | 604 | 666 | 587 | 648 | 575 | 635 | 566 | 625 | 559 | 617 | 553 | 611 | 549 | 606 | 545 | 602 | 542 | 598 | 539 | 595 |
0.24 | 618 | 683 | 550 | 607 | 516 | 569 | 495 | 547 | 481 | 531 | 472 | 521 | 464 | 513 | 459 | 506 | 454 | 501 | 450 | 497 | 447 | 494 | 445 | 491 | 442 | 488 |
0.26 | 514 | 567 | 457 | 505 | 429 | 473 | 412 | 454 | 400 | 442 | 392 | 433 | 386 | 426 | 381 | 421 | 378 | 417 | 375 | 413 | 372 | 411 | 370 | 408 | 368 | 406 |
0.28 | 432 | 477 | 385 | 424 | 361 | 398 | 346 | 382 | 337 | 372 | 330 | 364 | 325 | 358 | 321 | 354 | 318 | 351 | 315 | 348 | 313 | 345 | 311 | 343 | 309 | 342 |
0.30 | 367 | 405 | 327 | 360 | 306 | 338 | 294 | 325 | 286 | 316 | 280 | 309 | 276 | 304 | 273 | 301 | 270 | 298 | 268 | 295 | 266 | 293 | 264 | 292 | 263 | 290 |
0.32 | 314 | 347 | 280 | 309 | 262 | 289 | 252 | 278 | 245 | 270 | 240 | 265 | 236 | 261 | 233 | 258 | 231 | 255 | 229 | 253 | 228 | 251 | 226 | 250 | 225 | 248 |
0.34 | 271 | 299 | 241 | 266 | 226 | 250 | 217 | 240 | 211 | 233 | 207 | 229 | 204 | 225 | 201 | 222 | 199 | 220 | 198 | 218 | 197 | 217 | 195 | 216 | 194 | 214 |
0.36 | 235 | 260 | 209 | 231 | 197 | 217 | 189 | 208 | 184 | 203 | 180 | 198 | 177 | 195 | 175 | 193 | 173 | 191 | 172 | 190 | 171 | 188 | 170 | 187 | 169 | 186 |
0.38 | 205 | 227 | 183 | 202 | 172 | 189 | 165 | 182 | 160 | 177 | 157 | 173 | 155 | 171 | 153 | 169 | 151 | 167 | 150 | 166 | 149 | 164 | 148 | 163 | 147 | 163 |
0.40 | 180 | 199 | 160 | 177 | 151 | 166 | 145 | 160 | 141 | 155 | 138 | 152 | 136 | 150 | 134 | 148 | 133 | 146 | 132 | 145 | 131 | 144 | 130 | 143 | 129 | 143 |
0.42 | 159 | 175 | 141 | 156 | 133 | 146 | 128 | 141 | 124 | 137 | 122 | 134 | 120 | 132 | 118 | 130 | 117 | 129 | 116 | 128 | 115 | 127 | 115 | 126 | 114 | 126 |
0.44 | 140 | 155 | 125 | 138 | 117 | 129 | 113 | 124 | 110 | 121 | 108 | 119 | 106 | 117 | 105 | 115 | 104 | 114 | 103 | 113 | 102 | 113 | 102 | 112 | 101 | 111 |
0.46 | 125 | 137 | 111 | 122 | 104 | 115 | 100 | 110 | 98 | 107 | 96 | 105 | 94 | 104 | 93 | 102 | 92 | 101 | 91 | 101 | 91 | 100 | 90 | 99 | 90 | 99 |
0.48 | 111 | 122 | 99 | 109 | 93 | 102 | 89 | 98 | 87 | 96 | 85 | 94 | 84 | 92 | 83 | 91 | 82 | 90 | 81 | 90 | 81 | 89 | 80 | 89 | 80 | 88 |
0.50 | 99 | 109 | 88 | 97 | 83 | 91 | 80 | 88 | 78 | 85 | 76 | 84 | 75 | 82 | 74 | 81 | 73 | 81 | 73 | 80 | 72 | 79 | 72 | 79 | 71 | 79 |
0.52 | 89 | 98 | 79 | 87 | 74 | 82 | 71 | 79 | 69 | 76 | 68 | 75 | 67 | 74 | 66 | 73 | 66 | 72 | 65 | 72 | 65 | 71 | 64 | 71 | 64 | 70 |
0.54 | 79 | 87 | 71 | 78 | 67 | 73 | 64 | 70 | 62 | 69 | 61 | 67 | 60 | 66 | 59 | 65 | 59 | 65 | 58 | 64 | 58 | 64 | 58 | 63 | 57 | 63 |
0.56 | 71 | 78 | 64 | 70 | 60 | 66 | 58 | 63 | 56 | 62 | 55 | 60 | 54 | 59 | 53 | 59 | 53 | 58 | 53 | 58 | 52 | 57 | 52 | 57 | 52 | 57 |
0.58 | 64 | 71 | 57 | 63 | 54 | 59 | 52 | 57 | 50 | 55 | 49 | 54 | 49 | 54 | 48 | 53 | 48 | 52 | 47 | 52 | 47 | 52 | 47 | 51 | 47 | 51 |
0.60 | 58 | 64 | 52 | 57 | 49 | 53 | 47 | 51 | 45 | 50 | 45 | 49 | 44 | 48 | 43 | 48 | 43 | 47 | 43 | 47 | 42 | 47 | 42 | 46 | 42 | 46 |
0.62 | 52 | 57 | 47 | 51 | 44 | 48 | 42 | 46 | 41 | 45 | 40 | 44 | 40 | 44 | 39 | 43 | 39 | 43 | 39 | 42 | 38 | 42 | 38 | 42 | 38 | 42 |
0.64 | 47 | 52 | 42 | 46 | 40 | 43 | 38 | 42 | 37 | 41 | 36 | 40 | 36 | 39 | 35 | 39 | 35 | 38 | 35 | 38 | 35 | 38 | 34 | 38 | 34 | 38 |
0.66 | 42 | 47 | 38 | 42 | 36 | 39 | 34 | 38 | 33 | 37 | 33 | 36 | 32 | 36 | 32 | 35 | 32 | 35 | 31 | 35 | 31 | 34 | 31 | 34 | 31 | 34 |
0.68 | 38 | 42 | 34 | 38 | 32 | 35 | 31 | 34 | 30 | 33 | 30 | 33 | 29 | 32 | 29 | 32 | 29 | 31 | 28 | 31 | 28 | 31 | 28 | 31 | 28 | 31 |
0.70 | 34 | 38 | 31 | 34 | 29 | 32 | 28 | 31 | 27 | 30 | 27 | 29 | 26 | 29 | 26 | 29 | 26 | 28 | 26 | 28 | 26 | 28 | 25 | 28 | 25 | 28 |
0.72 | 31 | 34 | 28 | 31 | 26 | 29 | 25 | 28 | 25 | 27 | 24 | 27 | 24 | 26 | 24 | 26 | 23 | 26 | 23 | 25 | 23 | 25 | 23 | 25 | 23 | 25 |
0.74 | 28 | 31 | 25 | 28 | 24 | 26 | 23 | 25 | 22 | 24 | 22 | 24 | 22 | 24 | 21 | 23 | 21 | 23 | 21 | 23 | 21 | 23 | 21 | 23 | 21 | 23 |
0.76 | 25 | 28 | 23 | 25 | 21 | 23 | 21 | 23 | 20 | 22 | 20 | 22 | 20 | 21 | 19 | 21 | 19 | 21 | 19 | 21 | 19 | 21 | 19 | 21 | 19 | 20 |
0.78 | 23 | 25 | 20 | 22 | 19 | 21 | 19 | 20 | 18 | 20 | 18 | 20 | 18 | 19 | 17 | 19 | 17 | 19 | 17 | 19 | 17 | 19 | 17 | 19 | 17 | 18 |
0.80 | 20 | 22 | 18 | 20 | 17 | 19 | 17 | 18 | 16 | 18 | 16 | 18 | 16 | 17 | 16 | 17 | 16 | 17 | 16 | 17 | 15 | 17 | 15 | 17 | 15 | 17 |
0.82 | 18 | 20 | 17 | 18 | 16 | 17 | 15 | 16 | 15 | 16 | 15 | 16 | 14 | 16 | 14 | 15 | 14 | 15 | 14 | 15 | 14 | 15 | 14 | 15 | 14 | 15 |
0.84 | 16 | 18 | 15 | 16 | 14 | 15 | 14 | 15 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 12 | 14 | 12 | 13 | 12 | 13 |
0.86 | 14 | 16 | 13 | 14 | 12 | 14 | 12 | 13 | 12 | 13 | 12 | 13 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 |
0.88 | 13 | 14 | 12 | 13 | 11 | 12 | 11 | 12 | 11 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.90 | 11 | 12 | 10 | 11 | 10 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 9 |
0.92 | 10 | 11 | 9 | 10 | 9 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
0.94 | 8 | 9 | 8 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
0.96 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
0.98 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
α=0.1
α=0.05
α=0.01
α=0.001
Power=0.9 :
Probability of Type I Error (α)=0.1 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 48290 | 62949 | 42924 | 55955 | 40242 | 52458 | 38632 | 50360 | 37559 | 48961 | 36793 | 47962 | 36218 | 47212 | 35771 | 46630 | 35413 | 46163 | 35120 | 45782 | 34876 | 45464 | 34670 | 45195 | 34493 | 44964 |
0.04 | 11829 | 15420 | 10515 | 13707 | 9858 | 12850 | 9464 | 12336 | 9201 | 11994 | 9013 | 11749 | 8872 | 11565 | 8763 | 11423 | 8675 | 11308 | 8604 | 11215 | 8544 | 11137 | 8493 | 11071 | 8450 | 11015 |
0.06 | 5150 | 6713 | 4578 | 5967 | 4292 | 5595 | 4121 | 5371 | 4006 | 5222 | 3925 | 5115 | 3863 | 5035 | 3816 | 4973 | 3777 | 4924 | 3746 | 4883 | 3720 | 4849 | 3698 | 4820 | 3679 | 4796 |
0.08 | 2837 | 3698 | 2522 | 3287 | 2365 | 3082 | 2270 | 2959 | 2207 | 2877 | 2162 | 2818 | 2129 | 2774 | 2102 | 2740 | 2081 | 2712 | 2064 | 2690 | 2050 | 2671 | 2038 | 2656 | 2027 | 2642 |
0.10 | 1778 | 2317 | 1581 | 2060 | 1482 | 1931 | 1423 | 1854 | 1383 | 1803 | 1355 | 1766 | 1334 | 1738 | 1318 | 1717 | 1304 | 1700 | 1294 | 1686 | 1285 | 1674 | 1277 | 1664 | 1271 | 1656 |
0.12 | 1209 | 1575 | 1075 | 1400 | 1008 | 1313 | 967 | 1260 | 941 | 1225 | 921 | 1200 | 907 | 1182 | 896 | 1167 | 887 | 1155 | 880 | 1146 | 874 | 1138 | 868 | 1131 | 864 | 1125 |
0.14 | 869 | 1132 | 773 | 1006 | 724 | 944 | 696 | 906 | 676 | 881 | 663 | 863 | 652 | 850 | 644 | 839 | 638 | 831 | 633 | 824 | 628 | 818 | 625 | 813 | 621 | 809 |
0.16 | 651 | 848 | 579 | 754 | 543 | 707 | 521 | 679 | 507 | 660 | 496 | 646 | 489 | 636 | 483 | 629 | 478 | 622 | 474 | 617 | 471 | 613 | 468 | 609 | 466 | 606 |
0.18 | 503 | 655 | 447 | 582 | 420 | 546 | 403 | 524 | 392 | 510 | 384 | 500 | 378 | 492 | 373 | 486 | 369 | 481 | 366 | 477 | 364 | 474 | 362 | 471 | 360 | 468 |
0.20 | 398 | 518 | 354 | 461 | 332 | 432 | 319 | 415 | 310 | 404 | 304 | 396 | 299 | 389 | 296 | 385 | 293 | 381 | 290 | 378 | 288 | 375 | 287 | 373 | 285 | 371 |
0.22 | 322 | 419 | 286 | 372 | 269 | 349 | 258 | 335 | 251 | 326 | 246 | 320 | 242 | 315 | 239 | 311 | 237 | 308 | 235 | 305 | 233 | 303 | 232 | 301 | 231 | 300 |
0.24 | 264 | 344 | 235 | 306 | 221 | 287 | 212 | 275 | 206 | 268 | 202 | 262 | 199 | 258 | 196 | 255 | 194 | 253 | 193 | 251 | 191 | 249 | 190 | 247 | 189 | 246 |
0.26 | 220 | 286 | 196 | 254 | 184 | 239 | 176 | 229 | 172 | 223 | 168 | 218 | 166 | 215 | 164 | 212 | 162 | 210 | 161 | 209 | 159 | 207 | 159 | 206 | 158 | 205 |
0.28 | 185 | 241 | 165 | 214 | 155 | 201 | 149 | 193 | 145 | 188 | 142 | 184 | 139 | 181 | 138 | 179 | 136 | 177 | 135 | 176 | 134 | 174 | 134 | 173 | 133 | 173 |
0.30 | 157 | 204 | 140 | 182 | 132 | 171 | 126 | 164 | 123 | 160 | 121 | 156 | 119 | 154 | 117 | 152 | 116 | 151 | 115 | 149 | 114 | 148 | 114 | 147 | 113 | 147 |
0.32 | 135 | 175 | 120 | 156 | 113 | 146 | 109 | 141 | 106 | 137 | 103 | 134 | 102 | 132 | 101 | 130 | 100 | 129 | 99 | 128 | 98 | 127 | 98 | 127 | 97 | 126 |
0.34 | 117 | 151 | 104 | 135 | 98 | 127 | 94 | 122 | 91 | 118 | 89 | 116 | 88 | 114 | 87 | 113 | 86 | 112 | 86 | 111 | 85 | 110 | 84 | 109 | 84 | 109 |
0.36 | 101 | 131 | 90 | 117 | 85 | 110 | 82 | 106 | 79 | 103 | 78 | 101 | 77 | 99 | 76 | 98 | 75 | 97 | 74 | 96 | 74 | 96 | 74 | 95 | 73 | 95 |
0.38 | 89 | 115 | 79 | 102 | 74 | 96 | 71 | 92 | 70 | 90 | 68 | 88 | 67 | 87 | 66 | 86 | 66 | 85 | 65 | 84 | 65 | 84 | 64 | 83 | 64 | 83 |
0.40 | 78 | 101 | 70 | 90 | 65 | 85 | 63 | 81 | 61 | 79 | 60 | 78 | 59 | 76 | 58 | 75 | 58 | 75 | 57 | 74 | 57 | 74 | 57 | 73 | 56 | 73 |
0.42 | 69 | 89 | 62 | 79 | 58 | 75 | 56 | 72 | 54 | 70 | 53 | 68 | 52 | 67 | 52 | 67 | 51 | 66 | 51 | 65 | 50 | 65 | 50 | 65 | 50 | 64 |
0.44 | 61 | 79 | 55 | 70 | 51 | 66 | 49 | 64 | 48 | 62 | 47 | 61 | 46 | 60 | 46 | 59 | 45 | 59 | 45 | 58 | 45 | 58 | 45 | 57 | 44 | 57 |
0.46 | 54 | 70 | 49 | 63 | 46 | 59 | 44 | 57 | 43 | 55 | 42 | 54 | 41 | 53 | 41 | 53 | 41 | 52 | 40 | 52 | 40 | 51 | 40 | 51 | 40 | 51 |
0.48 | 49 | 63 | 43 | 56 | 41 | 53 | 39 | 51 | 38 | 49 | 38 | 48 | 37 | 48 | 37 | 47 | 36 | 47 | 36 | 46 | 36 | 46 | 36 | 46 | 35 | 45 |
0.50 | 44 | 56 | 39 | 50 | 37 | 47 | 35 | 45 | 34 | 44 | 34 | 43 | 33 | 43 | 33 | 42 | 33 | 42 | 32 | 41 | 32 | 41 | 32 | 41 | 32 | 41 |
0.52 | 39 | 50 | 35 | 45 | 33 | 42 | 32 | 41 | 31 | 40 | 30 | 39 | 30 | 38 | 30 | 38 | 29 | 37 | 29 | 37 | 29 | 37 | 29 | 37 | 29 | 37 |
0.54 | 35 | 45 | 32 | 40 | 30 | 38 | 29 | 37 | 28 | 36 | 27 | 35 | 27 | 34 | 27 | 34 | 26 | 34 | 26 | 33 | 26 | 33 | 26 | 33 | 26 | 33 |
0.56 | 32 | 41 | 28 | 36 | 27 | 34 | 26 | 33 | 25 | 32 | 25 | 32 | 24 | 31 | 24 | 31 | 24 | 30 | 24 | 30 | 24 | 30 | 23 | 30 | 23 | 30 |
0.58 | 29 | 37 | 26 | 33 | 24 | 31 | 23 | 30 | 23 | 29 | 22 | 29 | 22 | 28 | 22 | 28 | 22 | 28 | 22 | 27 | 21 | 27 | 21 | 27 | 21 | 27 |
0.60 | 26 | 33 | 23 | 30 | 22 | 28 | 21 | 27 | 21 | 26 | 20 | 26 | 20 | 25 | 20 | 25 | 20 | 25 | 20 | 25 | 19 | 25 | 19 | 24 | 19 | 24 |
0.62 | 24 | 30 | 21 | 27 | 20 | 25 | 19 | 24 | 19 | 24 | 19 | 23 | 18 | 23 | 18 | 23 | 18 | 23 | 18 | 22 | 18 | 22 | 18 | 22 | 18 | 22 |
0.64 | 21 | 27 | 19 | 24 | 18 | 23 | 18 | 22 | 17 | 22 | 17 | 21 | 17 | 21 | 16 | 21 | 16 | 21 | 16 | 20 | 16 | 20 | 16 | 20 | 16 | 20 |
0.66 | 19 | 25 | 18 | 22 | 17 | 21 | 16 | 20 | 16 | 20 | 15 | 19 | 15 | 19 | 15 | 19 | 15 | 19 | 15 | 19 | 15 | 18 | 15 | 18 | 15 | 18 |
0.68 | 18 | 22 | 16 | 20 | 15 | 19 | 15 | 18 | 14 | 18 | 14 | 18 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 13 | 17 | 13 | 17 | 13 | 17 |
0.70 | 16 | 20 | 15 | 18 | 14 | 17 | 13 | 17 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 12 | 15 | 12 | 15 | 12 | 15 | 12 | 15 | 12 | 15 |
0.72 | 15 | 18 | 13 | 17 | 13 | 16 | 12 | 15 | 12 | 15 | 12 | 15 | 12 | 14 | 12 | 14 | 11 | 14 | 11 | 14 | 11 | 14 | 11 | 14 | 11 | 14 |
0.74 | 13 | 17 | 12 | 15 | 12 | 14 | 11 | 14 | 11 | 14 | 11 | 13 | 11 | 13 | 11 | 13 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 | 10 | 13 |
0.76 | 12 | 15 | 11 | 14 | 11 | 13 | 10 | 13 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 9 | 12 | 9 | 12 | 9 | 12 |
0.78 | 11 | 14 | 10 | 12 | 10 | 12 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 |
0.80 | 10 | 12 | 9 | 11 | 9 | 11 | 9 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 |
0.82 | 9 | 11 | 8 | 10 | 8 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 |
0.84 | 8 | 10 | 8 | 9 | 7 | 9 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.86 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 6 | 8 | 6 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.88 | 7 | 8 | 6 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.90 | 6 | 7 | 6 | 7 | 6 | 7 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.92 | 6 | 7 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
0.94 | 5 | 6 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
0.96 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
0.98 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 |
Power=0.9 :
Probability of Type I Error (α)=0.05 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 62949 | 77234 | 55955 | 68653 | 52458 | 64362 | 50360 | 61788 | 48961 | 60071 | 47962 | 58846 | 47212 | 57926 | 46630 | 57211 | 46163 | 56639 | 45782 | 56171 | 45464 | 55781 | 45195 | 55451 | 44964 | 55168 |
0.04 | 15420 | 18918 | 13707 | 16817 | 12850 | 15766 | 12336 | 15135 | 11994 | 14715 | 11749 | 14415 | 11565 | 14189 | 11423 | 14014 | 11308 | 13874 | 11215 | 13759 | 11137 | 13664 | 11071 | 13583 | 11015 | 13514 |
0.06 | 6713 | 8236 | 5967 | 7321 | 5595 | 6864 | 5371 | 6589 | 5222 | 6406 | 5115 | 6276 | 5035 | 6178 | 4973 | 6101 | 4924 | 6040 | 4883 | 5990 | 4849 | 5949 | 4820 | 5914 | 4796 | 5883 |
0.08 | 3698 | 4536 | 3287 | 4033 | 3082 | 3781 | 2959 | 3630 | 2877 | 3529 | 2818 | 3457 | 2774 | 3403 | 2740 | 3361 | 2712 | 3327 | 2690 | 3300 | 2671 | 3277 | 2656 | 3258 | 2642 | 3241 |
0.10 | 2317 | 2842 | 2060 | 2527 | 1931 | 2369 | 1854 | 2274 | 1803 | 2211 | 1766 | 2166 | 1738 | 2132 | 1717 | 2106 | 1700 | 2085 | 1686 | 2068 | 1674 | 2053 | 1664 | 2041 | 1656 | 2031 |
0.12 | 1575 | 1931 | 1400 | 1717 | 1313 | 1610 | 1260 | 1546 | 1225 | 1503 | 1200 | 1472 | 1182 | 1449 | 1167 | 1431 | 1155 | 1417 | 1146 | 1405 | 1138 | 1396 | 1131 | 1387 | 1125 | 1380 |
0.14 | 1132 | 1388 | 1006 | 1234 | 944 | 1157 | 906 | 1111 | 881 | 1080 | 863 | 1058 | 850 | 1042 | 839 | 1029 | 831 | 1019 | 824 | 1010 | 818 | 1003 | 813 | 997 | 809 | 992 |
0.16 | 848 | 1039 | 754 | 924 | 707 | 867 | 679 | 832 | 660 | 809 | 646 | 793 | 636 | 780 | 629 | 771 | 622 | 763 | 617 | 757 | 613 | 751 | 609 | 747 | 606 | 743 |
0.18 | 655 | 803 | 582 | 714 | 546 | 670 | 524 | 643 | 510 | 625 | 500 | 612 | 492 | 603 | 486 | 595 | 481 | 589 | 477 | 585 | 474 | 581 | 471 | 577 | 468 | 574 |
0.20 | 518 | 636 | 461 | 565 | 432 | 530 | 415 | 509 | 404 | 495 | 396 | 485 | 389 | 477 | 385 | 471 | 381 | 467 | 378 | 463 | 375 | 460 | 373 | 457 | 371 | 455 |
0.22 | 419 | 513 | 372 | 456 | 349 | 428 | 335 | 411 | 326 | 400 | 320 | 392 | 315 | 385 | 311 | 381 | 308 | 377 | 305 | 374 | 303 | 371 | 301 | 369 | 300 | 367 |
0.24 | 344 | 421 | 306 | 375 | 287 | 351 | 275 | 337 | 268 | 328 | 262 | 321 | 258 | 316 | 255 | 313 | 253 | 309 | 251 | 307 | 249 | 305 | 247 | 303 | 246 | 301 |
0.26 | 286 | 350 | 254 | 312 | 239 | 292 | 229 | 281 | 223 | 273 | 218 | 267 | 215 | 263 | 212 | 260 | 210 | 257 | 209 | 255 | 207 | 254 | 206 | 252 | 205 | 251 |
0.28 | 241 | 295 | 214 | 262 | 201 | 246 | 193 | 236 | 188 | 230 | 184 | 225 | 181 | 222 | 179 | 219 | 177 | 217 | 176 | 215 | 174 | 213 | 173 | 212 | 173 | 211 |
0.30 | 204 | 250 | 182 | 223 | 171 | 209 | 164 | 201 | 160 | 195 | 156 | 191 | 154 | 188 | 152 | 186 | 151 | 184 | 149 | 183 | 148 | 181 | 147 | 180 | 147 | 179 |
0.32 | 175 | 214 | 156 | 191 | 146 | 179 | 141 | 172 | 137 | 167 | 134 | 164 | 132 | 161 | 130 | 159 | 129 | 158 | 128 | 157 | 127 | 156 | 127 | 155 | 126 | 154 |
0.34 | 151 | 185 | 135 | 165 | 127 | 155 | 122 | 149 | 118 | 145 | 116 | 142 | 114 | 139 | 113 | 138 | 112 | 136 | 111 | 135 | 110 | 134 | 109 | 134 | 109 | 133 |
0.36 | 131 | 161 | 117 | 143 | 110 | 134 | 106 | 129 | 103 | 126 | 101 | 123 | 99 | 121 | 98 | 120 | 97 | 119 | 96 | 118 | 96 | 117 | 95 | 116 | 95 | 116 |
0.38 | 115 | 140 | 102 | 125 | 96 | 117 | 92 | 113 | 90 | 110 | 88 | 108 | 87 | 106 | 86 | 105 | 85 | 104 | 84 | 103 | 84 | 102 | 83 | 102 | 83 | 101 |
0.40 | 101 | 123 | 90 | 110 | 85 | 103 | 81 | 99 | 79 | 96 | 78 | 95 | 76 | 93 | 75 | 92 | 75 | 91 | 74 | 90 | 74 | 90 | 73 | 89 | 73 | 89 |
0.42 | 89 | 109 | 79 | 97 | 75 | 91 | 72 | 87 | 70 | 85 | 68 | 83 | 67 | 82 | 67 | 81 | 66 | 80 | 65 | 80 | 65 | 79 | 65 | 79 | 64 | 78 |
0.44 | 79 | 96 | 70 | 86 | 66 | 81 | 64 | 78 | 62 | 75 | 61 | 74 | 60 | 73 | 59 | 72 | 59 | 71 | 58 | 71 | 58 | 70 | 57 | 70 | 57 | 69 |
0.46 | 70 | 86 | 63 | 76 | 59 | 72 | 57 | 69 | 55 | 67 | 54 | 66 | 53 | 65 | 53 | 64 | 52 | 63 | 52 | 63 | 51 | 62 | 51 | 62 | 51 | 62 |
0.48 | 63 | 76 | 56 | 68 | 53 | 64 | 51 | 61 | 49 | 60 | 48 | 59 | 48 | 58 | 47 | 57 | 47 | 57 | 46 | 56 | 46 | 56 | 46 | 55 | 45 | 55 |
0.50 | 56 | 68 | 50 | 61 | 47 | 57 | 45 | 55 | 44 | 54 | 43 | 52 | 43 | 52 | 42 | 51 | 42 | 51 | 41 | 50 | 41 | 50 | 41 | 50 | 41 | 49 |
0.52 | 50 | 61 | 45 | 55 | 42 | 51 | 41 | 49 | 40 | 48 | 39 | 47 | 38 | 46 | 38 | 46 | 37 | 45 | 37 | 45 | 37 | 45 | 37 | 45 | 37 | 44 |
0.54 | 45 | 55 | 40 | 49 | 38 | 46 | 37 | 44 | 36 | 43 | 35 | 42 | 34 | 42 | 34 | 41 | 34 | 41 | 33 | 41 | 33 | 40 | 33 | 40 | 33 | 40 |
0.56 | 41 | 49 | 36 | 44 | 34 | 41 | 33 | 40 | 32 | 39 | 32 | 38 | 31 | 38 | 31 | 37 | 30 | 37 | 30 | 37 | 30 | 36 | 30 | 36 | 30 | 36 |
0.58 | 37 | 44 | 33 | 40 | 31 | 37 | 30 | 36 | 29 | 35 | 29 | 34 | 28 | 34 | 28 | 34 | 28 | 33 | 27 | 33 | 27 | 33 | 27 | 33 | 27 | 32 |
0.60 | 33 | 40 | 30 | 36 | 28 | 34 | 27 | 33 | 26 | 32 | 26 | 31 | 25 | 31 | 25 | 30 | 25 | 30 | 25 | 30 | 25 | 30 | 24 | 29 | 24 | 29 |
0.62 | 30 | 36 | 27 | 32 | 25 | 31 | 24 | 29 | 24 | 29 | 23 | 28 | 23 | 28 | 23 | 27 | 23 | 27 | 22 | 27 | 22 | 27 | 22 | 27 | 22 | 27 |
0.64 | 27 | 33 | 24 | 29 | 23 | 28 | 22 | 27 | 22 | 26 | 21 | 26 | 21 | 25 | 21 | 25 | 21 | 25 | 20 | 24 | 20 | 24 | 20 | 24 | 20 | 24 |
0.66 | 25 | 30 | 22 | 27 | 21 | 25 | 20 | 24 | 20 | 24 | 19 | 23 | 19 | 23 | 19 | 23 | 19 | 22 | 19 | 22 | 18 | 22 | 18 | 22 | 18 | 22 |
0.68 | 22 | 27 | 20 | 24 | 19 | 23 | 18 | 22 | 18 | 21 | 18 | 21 | 17 | 21 | 17 | 20 | 17 | 20 | 17 | 20 | 17 | 20 | 17 | 20 | 17 | 20 |
0.70 | 20 | 24 | 18 | 22 | 17 | 21 | 17 | 20 | 16 | 19 | 16 | 19 | 16 | 19 | 16 | 19 | 15 | 18 | 15 | 18 | 15 | 18 | 15 | 18 | 15 | 18 |
0.72 | 18 | 22 | 17 | 20 | 16 | 19 | 15 | 18 | 15 | 18 | 15 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 16 | 14 | 16 |
0.74 | 17 | 20 | 15 | 18 | 14 | 17 | 14 | 16 | 14 | 16 | 13 | 16 | 13 | 16 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 |
0.76 | 15 | 18 | 14 | 16 | 13 | 15 | 13 | 15 | 12 | 15 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 |
0.78 | 14 | 16 | 12 | 15 | 12 | 14 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 |
0.80 | 12 | 15 | 11 | 13 | 11 | 13 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.82 | 11 | 13 | 10 | 12 | 10 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 |
0.84 | 10 | 12 | 9 | 11 | 9 | 10 | 9 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 |
0.86 | 9 | 11 | 8 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 7 | 9 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.88 | 8 | 10 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.90 | 7 | 8 | 7 | 8 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.92 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.94 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
0.96 | 5 | 6 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
0.98 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Power=0.9 :
Probability of Type I Error (α)=0.01 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 95680 | 109368 | 85049 | 97216 | 79733 | 91140 | 76544 | 87495 | 74418 | 85065 | 72899 | 83329 | 71760 | 82027 | 70874 | 81014 | 70166 | 80204 | 69586 | 79541 | 69103 | 78989 | 68694 | 78521 | 68343 | 78121 |
0.04 | 23436 | 26789 | 20832 | 23812 | 19530 | 22324 | 18749 | 21431 | 18229 | 20836 | 17857 | 20411 | 17578 | 20092 | 17361 | 19844 | 17187 | 19646 | 17045 | 19483 | 16927 | 19348 | 16827 | 19234 | 16741 | 19135 |
0.06 | 10202 | 11662 | 9069 | 10366 | 8502 | 9718 | 8162 | 9330 | 7936 | 9071 | 7774 | 8886 | 7652 | 8747 | 7558 | 8639 | 7482 | 8552 | 7421 | 8482 | 7369 | 8423 | 7325 | 8373 | 7288 | 8330 |
0.08 | 5619 | 6423 | 4995 | 5709 | 4683 | 5353 | 4496 | 5139 | 4371 | 4996 | 4282 | 4894 | 4215 | 4818 | 4163 | 4758 | 4121 | 4711 | 4087 | 4672 | 4059 | 4639 | 4035 | 4612 | 4014 | 4588 |
0.10 | 3520 | 4024 | 3129 | 3577 | 2934 | 3353 | 2817 | 3219 | 2739 | 3130 | 2683 | 3066 | 2641 | 3018 | 2608 | 2981 | 2582 | 2951 | 2561 | 2927 | 2543 | 2907 | 2528 | 2889 | 2515 | 2875 |
0.12 | 2392 | 2734 | 2127 | 2431 | 1994 | 2279 | 1914 | 2188 | 1861 | 2127 | 1823 | 2084 | 1795 | 2051 | 1773 | 2026 | 1755 | 2006 | 1740 | 1989 | 1728 | 1975 | 1718 | 1964 | 1709 | 1954 |
0.14 | 1719 | 1965 | 1528 | 1747 | 1433 | 1638 | 1376 | 1572 | 1338 | 1529 | 1310 | 1498 | 1290 | 1474 | 1274 | 1456 | 1261 | 1442 | 1251 | 1430 | 1242 | 1420 | 1235 | 1411 | 1229 | 1404 |
0.16 | 1287 | 1471 | 1144 | 1308 | 1073 | 1226 | 1030 | 1177 | 1002 | 1145 | 981 | 1121 | 966 | 1104 | 954 | 1090 | 945 | 1079 | 937 | 1070 | 930 | 1063 | 925 | 1057 | 920 | 1051 |
0.18 | 994 | 1136 | 884 | 1010 | 829 | 947 | 796 | 909 | 774 | 884 | 758 | 866 | 746 | 853 | 737 | 842 | 730 | 834 | 724 | 827 | 719 | 821 | 714 | 816 | 711 | 812 |
0.20 | 787 | 899 | 700 | 799 | 656 | 750 | 630 | 720 | 612 | 700 | 600 | 686 | 591 | 675 | 583 | 667 | 578 | 660 | 573 | 654 | 569 | 650 | 566 | 646 | 563 | 643 |
0.22 | 635 | 726 | 565 | 645 | 530 | 605 | 509 | 581 | 495 | 565 | 484 | 553 | 477 | 545 | 471 | 538 | 466 | 533 | 463 | 528 | 459 | 525 | 457 | 522 | 454 | 519 |
0.24 | 521 | 595 | 463 | 529 | 435 | 496 | 417 | 477 | 406 | 463 | 398 | 454 | 391 | 447 | 387 | 442 | 383 | 437 | 380 | 434 | 377 | 431 | 375 | 428 | 373 | 426 |
0.26 | 433 | 495 | 385 | 440 | 361 | 413 | 347 | 396 | 338 | 385 | 331 | 378 | 326 | 372 | 322 | 367 | 318 | 364 | 316 | 361 | 314 | 358 | 312 | 356 | 310 | 354 |
0.28 | 364 | 416 | 324 | 370 | 304 | 347 | 292 | 333 | 284 | 324 | 278 | 318 | 274 | 313 | 271 | 309 | 268 | 306 | 266 | 303 | 264 | 301 | 262 | 299 | 261 | 298 |
0.30 | 309 | 353 | 275 | 314 | 258 | 295 | 248 | 283 | 241 | 275 | 236 | 270 | 233 | 266 | 230 | 262 | 228 | 260 | 226 | 258 | 224 | 256 | 223 | 254 | 222 | 253 |
0.32 | 265 | 303 | 236 | 269 | 221 | 253 | 213 | 243 | 207 | 236 | 203 | 231 | 199 | 228 | 197 | 225 | 195 | 223 | 193 | 221 | 192 | 219 | 191 | 218 | 190 | 217 |
0.34 | 229 | 261 | 204 | 232 | 191 | 218 | 183 | 209 | 178 | 204 | 175 | 199 | 172 | 196 | 170 | 194 | 168 | 192 | 167 | 191 | 166 | 189 | 165 | 188 | 164 | 187 |
0.36 | 199 | 227 | 177 | 202 | 166 | 189 | 159 | 182 | 155 | 177 | 152 | 173 | 150 | 171 | 148 | 169 | 146 | 167 | 145 | 165 | 144 | 164 | 143 | 163 | 143 | 163 |
0.38 | 173 | 198 | 154 | 176 | 145 | 165 | 139 | 159 | 135 | 154 | 133 | 151 | 131 | 149 | 129 | 147 | 128 | 146 | 127 | 145 | 126 | 144 | 125 | 143 | 125 | 142 |
0.40 | 152 | 174 | 136 | 155 | 127 | 145 | 122 | 139 | 119 | 136 | 117 | 133 | 115 | 131 | 113 | 129 | 112 | 128 | 111 | 127 | 111 | 126 | 110 | 125 | 109 | 125 |
0.42 | 134 | 153 | 119 | 136 | 112 | 128 | 108 | 123 | 105 | 120 | 103 | 117 | 101 | 115 | 100 | 114 | 99 | 113 | 98 | 112 | 98 | 111 | 97 | 111 | 97 | 110 |
0.44 | 119 | 135 | 106 | 121 | 99 | 113 | 95 | 109 | 93 | 106 | 91 | 104 | 90 | 102 | 89 | 101 | 88 | 100 | 87 | 99 | 86 | 98 | 86 | 98 | 85 | 97 |
0.46 | 105 | 120 | 94 | 107 | 88 | 100 | 85 | 97 | 82 | 94 | 81 | 92 | 80 | 91 | 79 | 90 | 78 | 89 | 77 | 88 | 77 | 87 | 76 | 87 | 76 | 86 |
0.48 | 94 | 107 | 84 | 95 | 79 | 89 | 76 | 86 | 74 | 84 | 72 | 82 | 71 | 81 | 70 | 80 | 69 | 79 | 69 | 78 | 68 | 78 | 68 | 77 | 68 | 77 |
0.50 | 84 | 95 | 75 | 85 | 70 | 80 | 68 | 77 | 66 | 75 | 64 | 73 | 63 | 72 | 63 | 71 | 62 | 71 | 62 | 70 | 61 | 70 | 61 | 69 | 61 | 69 |
0.52 | 75 | 85 | 67 | 76 | 63 | 72 | 60 | 69 | 59 | 67 | 58 | 66 | 57 | 65 | 56 | 64 | 56 | 63 | 55 | 63 | 55 | 62 | 55 | 62 | 54 | 62 |
0.54 | 67 | 77 | 60 | 68 | 56 | 64 | 54 | 62 | 53 | 60 | 52 | 59 | 51 | 58 | 50 | 57 | 50 | 57 | 50 | 56 | 49 | 56 | 49 | 56 | 49 | 55 |
0.56 | 60 | 69 | 54 | 61 | 51 | 58 | 49 | 55 | 48 | 54 | 47 | 53 | 46 | 52 | 45 | 52 | 45 | 51 | 45 | 51 | 44 | 50 | 44 | 50 | 44 | 50 |
0.58 | 54 | 62 | 49 | 55 | 46 | 52 | 44 | 50 | 43 | 49 | 42 | 48 | 41 | 47 | 41 | 46 | 41 | 46 | 40 | 46 | 40 | 45 | 40 | 45 | 40 | 45 |
0.60 | 49 | 56 | 44 | 50 | 41 | 47 | 40 | 45 | 39 | 44 | 38 | 43 | 37 | 42 | 37 | 42 | 37 | 41 | 36 | 41 | 36 | 41 | 36 | 41 | 36 | 40 |
0.62 | 44 | 50 | 40 | 45 | 37 | 42 | 36 | 41 | 35 | 40 | 34 | 39 | 34 | 38 | 33 | 38 | 33 | 37 | 33 | 37 | 33 | 37 | 32 | 37 | 32 | 37 |
0.64 | 40 | 45 | 36 | 41 | 34 | 38 | 32 | 37 | 32 | 36 | 31 | 35 | 31 | 35 | 30 | 34 | 30 | 34 | 30 | 34 | 30 | 33 | 29 | 33 | 29 | 33 |
0.66 | 36 | 41 | 32 | 37 | 30 | 34 | 29 | 33 | 29 | 32 | 28 | 32 | 28 | 31 | 27 | 31 | 27 | 31 | 27 | 30 | 27 | 30 | 27 | 30 | 26 | 30 |
0.68 | 33 | 37 | 29 | 33 | 28 | 31 | 27 | 30 | 26 | 29 | 25 | 29 | 25 | 28 | 25 | 28 | 25 | 28 | 24 | 28 | 24 | 27 | 24 | 27 | 24 | 27 |
0.70 | 29 | 33 | 26 | 30 | 25 | 28 | 24 | 27 | 23 | 26 | 23 | 26 | 23 | 26 | 22 | 25 | 22 | 25 | 22 | 25 | 22 | 25 | 22 | 25 | 22 | 24 |
0.72 | 27 | 30 | 24 | 27 | 23 | 25 | 22 | 25 | 21 | 24 | 21 | 23 | 21 | 23 | 20 | 23 | 20 | 23 | 20 | 23 | 20 | 22 | 20 | 22 | 20 | 22 |
0.74 | 24 | 27 | 22 | 24 | 20 | 23 | 20 | 22 | 19 | 22 | 19 | 21 | 19 | 21 | 18 | 21 | 18 | 21 | 18 | 20 | 18 | 20 | 18 | 20 | 18 | 20 |
0.76 | 22 | 24 | 20 | 22 | 18 | 21 | 18 | 20 | 17 | 20 | 17 | 19 | 17 | 19 | 17 | 19 | 17 | 19 | 16 | 18 | 16 | 18 | 16 | 18 | 16 | 18 |
0.78 | 20 | 22 | 18 | 20 | 17 | 19 | 16 | 18 | 16 | 18 | 15 | 17 | 15 | 17 | 15 | 17 | 15 | 17 | 15 | 17 | 15 | 17 | 15 | 16 | 15 | 16 |
0.80 | 18 | 20 | 16 | 18 | 15 | 17 | 15 | 16 | 14 | 16 | 14 | 16 | 14 | 15 | 14 | 15 | 14 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 |
0.82 | 16 | 18 | 14 | 16 | 14 | 15 | 13 | 15 | 13 | 14 | 13 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 13 | 12 | 13 | 12 | 13 |
0.84 | 14 | 16 | 13 | 14 | 12 | 14 | 12 | 13 | 12 | 13 | 11 | 13 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 |
0.86 | 13 | 14 | 11 | 13 | 11 | 12 | 11 | 12 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.88 | 11 | 12 | 10 | 11 | 10 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 |
0.90 | 10 | 11 | 9 | 10 | 9 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 |
0.92 | 9 | 9 | 8 | 9 | 8 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 7 |
0.94 | 7 | 8 | 7 | 8 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.96 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.98 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
Power=0.9 :
Probability of Type I Error (α)=0.001 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 140483 | 153650 | 124874 | 136578 | 117069 | 128042 | 112387 | 122921 | 109265 | 119506 | 107035 | 117067 | 105363 | 115238 | 104062 | 113816 | 103021 | 112678 | 102170 | 111746 | 101460 | 110970 | 100860 | 110314 | 100346 | 109751 |
0.04 | 34409 | 37634 | 30586 | 33453 | 28675 | 31362 | 27528 | 30108 | 26763 | 29272 | 26217 | 28674 | 25808 | 28226 | 25489 | 27878 | 25234 | 27599 | 25026 | 27371 | 24852 | 27181 | 24705 | 27020 | 24579 | 26882 |
0.06 | 14979 | 16382 | 13315 | 14562 | 12483 | 13652 | 11983 | 13106 | 11651 | 12742 | 11413 | 12482 | 11235 | 12287 | 11096 | 12136 | 10985 | 12014 | 10894 | 11915 | 10819 | 11832 | 10755 | 11762 | 10700 | 11702 |
0.08 | 8249 | 9022 | 7333 | 8020 | 6875 | 7519 | 6600 | 7218 | 6417 | 7018 | 6286 | 6875 | 6188 | 6767 | 6111 | 6684 | 6050 | 6617 | 6000 | 6562 | 5959 | 6517 | 5923 | 6478 | 5893 | 6445 |
0.10 | 5168 | 5652 | 4594 | 5024 | 4307 | 4710 | 4135 | 4522 | 4020 | 4396 | 3938 | 4307 | 3876 | 4239 | 3828 | 4187 | 3790 | 4145 | 3759 | 4111 | 3733 | 4083 | 3711 | 4058 | 3692 | 4038 |
0.12 | 3511 | 3840 | 3121 | 3414 | 2926 | 3200 | 2809 | 3073 | 2731 | 2987 | 2676 | 2926 | 2634 | 2881 | 2602 | 2845 | 2576 | 2817 | 2554 | 2793 | 2537 | 2774 | 2522 | 2758 | 2509 | 2744 |
0.14 | 2523 | 2759 | 2243 | 2453 | 2103 | 2300 | 2019 | 2208 | 1963 | 2147 | 1923 | 2103 | 1893 | 2070 | 1870 | 2045 | 1851 | 2024 | 1836 | 2007 | 1823 | 1994 | 1812 | 1982 | 1803 | 1972 |
0.16 | 1889 | 2065 | 1679 | 1836 | 1574 | 1722 | 1511 | 1653 | 1469 | 1607 | 1440 | 1574 | 1417 | 1550 | 1400 | 1531 | 1386 | 1515 | 1374 | 1503 | 1365 | 1492 | 1357 | 1484 | 1350 | 1476 |
0.18 | 1458 | 1595 | 1297 | 1418 | 1216 | 1329 | 1167 | 1276 | 1135 | 1241 | 1112 | 1216 | 1094 | 1197 | 1081 | 1182 | 1070 | 1170 | 1061 | 1161 | 1054 | 1153 | 1048 | 1146 | 1042 | 1140 |
0.20 | 1154 | 1262 | 1026 | 1122 | 962 | 1052 | 924 | 1010 | 898 | 982 | 880 | 962 | 866 | 947 | 855 | 935 | 847 | 926 | 840 | 918 | 834 | 912 | 829 | 907 | 825 | 902 |
0.22 | 931 | 1018 | 828 | 905 | 776 | 849 | 746 | 815 | 725 | 793 | 710 | 776 | 699 | 764 | 690 | 755 | 684 | 747 | 678 | 741 | 673 | 736 | 669 | 732 | 666 | 728 |
0.24 | 764 | 835 | 679 | 743 | 637 | 696 | 612 | 669 | 595 | 650 | 583 | 637 | 573 | 627 | 566 | 619 | 561 | 613 | 556 | 608 | 552 | 604 | 549 | 600 | 546 | 597 |
0.26 | 635 | 694 | 565 | 617 | 530 | 579 | 508 | 556 | 494 | 540 | 484 | 529 | 477 | 521 | 471 | 515 | 466 | 510 | 462 | 506 | 459 | 502 | 457 | 499 | 454 | 497 |
0.28 | 534 | 584 | 475 | 519 | 445 | 487 | 428 | 467 | 416 | 454 | 407 | 445 | 401 | 438 | 396 | 433 | 392 | 429 | 389 | 425 | 386 | 422 | 384 | 420 | 382 | 418 |
0.30 | 453 | 495 | 403 | 441 | 378 | 413 | 363 | 397 | 353 | 386 | 346 | 378 | 341 | 372 | 336 | 368 | 333 | 364 | 330 | 361 | 328 | 359 | 326 | 356 | 324 | 355 |
0.32 | 388 | 424 | 345 | 377 | 324 | 354 | 311 | 340 | 302 | 330 | 296 | 324 | 292 | 319 | 288 | 315 | 285 | 312 | 283 | 309 | 281 | 307 | 279 | 305 | 278 | 304 |
0.34 | 335 | 366 | 298 | 325 | 279 | 305 | 268 | 293 | 261 | 285 | 256 | 279 | 252 | 275 | 248 | 272 | 246 | 269 | 244 | 267 | 242 | 265 | 241 | 263 | 240 | 262 |
0.36 | 290 | 317 | 258 | 282 | 242 | 265 | 233 | 254 | 226 | 247 | 222 | 242 | 218 | 239 | 216 | 236 | 214 | 233 | 212 | 231 | 210 | 230 | 209 | 229 | 208 | 227 |
0.38 | 253 | 277 | 226 | 246 | 212 | 231 | 203 | 222 | 198 | 216 | 194 | 212 | 191 | 208 | 188 | 206 | 186 | 204 | 185 | 202 | 184 | 201 | 183 | 200 | 182 | 199 |
0.40 | 222 | 243 | 198 | 216 | 186 | 203 | 178 | 195 | 173 | 189 | 170 | 186 | 167 | 183 | 165 | 181 | 164 | 179 | 162 | 177 | 161 | 176 | 160 | 175 | 159 | 174 |
0.42 | 196 | 214 | 174 | 190 | 164 | 179 | 157 | 172 | 153 | 167 | 150 | 164 | 147 | 161 | 146 | 159 | 144 | 157 | 143 | 156 | 142 | 155 | 141 | 154 | 141 | 153 |
0.44 | 173 | 189 | 154 | 168 | 145 | 158 | 139 | 152 | 135 | 148 | 132 | 145 | 130 | 142 | 129 | 141 | 128 | 139 | 127 | 138 | 126 | 137 | 125 | 136 | 124 | 136 |
0.46 | 154 | 168 | 137 | 149 | 128 | 140 | 123 | 135 | 120 | 131 | 118 | 128 | 116 | 126 | 114 | 125 | 113 | 124 | 112 | 123 | 112 | 122 | 111 | 121 | 110 | 120 |
0.48 | 137 | 149 | 122 | 133 | 114 | 125 | 110 | 120 | 107 | 117 | 105 | 114 | 103 | 112 | 102 | 111 | 101 | 110 | 100 | 109 | 99 | 108 | 99 | 108 | 98 | 107 |
0.50 | 122 | 133 | 109 | 119 | 102 | 111 | 98 | 107 | 95 | 104 | 93 | 102 | 92 | 100 | 91 | 99 | 90 | 98 | 89 | 97 | 89 | 97 | 88 | 96 | 88 | 96 |
0.52 | 109 | 119 | 97 | 106 | 91 | 100 | 88 | 96 | 85 | 93 | 84 | 91 | 82 | 90 | 81 | 89 | 81 | 88 | 80 | 87 | 79 | 87 | 79 | 86 | 79 | 86 |
0.54 | 98 | 106 | 87 | 95 | 82 | 89 | 79 | 86 | 76 | 83 | 75 | 82 | 74 | 80 | 73 | 80 | 72 | 79 | 72 | 78 | 71 | 78 | 71 | 77 | 70 | 77 |
0.56 | 88 | 96 | 78 | 85 | 73 | 80 | 71 | 77 | 69 | 75 | 67 | 73 | 66 | 72 | 66 | 71 | 65 | 71 | 64 | 70 | 64 | 70 | 64 | 69 | 63 | 69 |
0.58 | 79 | 86 | 70 | 77 | 66 | 72 | 63 | 69 | 62 | 67 | 61 | 66 | 60 | 65 | 59 | 64 | 58 | 64 | 58 | 63 | 58 | 63 | 57 | 62 | 57 | 62 |
0.60 | 71 | 77 | 63 | 69 | 59 | 65 | 57 | 62 | 56 | 61 | 55 | 59 | 54 | 59 | 53 | 58 | 53 | 57 | 52 | 57 | 52 | 56 | 52 | 56 | 51 | 56 |
0.62 | 64 | 69 | 57 | 62 | 54 | 58 | 51 | 56 | 50 | 55 | 49 | 54 | 48 | 53 | 48 | 52 | 47 | 52 | 47 | 51 | 47 | 51 | 46 | 51 | 46 | 50 |
0.64 | 57 | 63 | 51 | 56 | 48 | 53 | 46 | 51 | 45 | 49 | 44 | 48 | 44 | 48 | 43 | 47 | 43 | 47 | 42 | 46 | 42 | 46 | 42 | 46 | 42 | 45 |
0.66 | 52 | 56 | 46 | 50 | 44 | 47 | 42 | 46 | 41 | 44 | 40 | 44 | 39 | 43 | 39 | 42 | 39 | 42 | 38 | 42 | 38 | 41 | 38 | 41 | 38 | 41 |
0.68 | 47 | 51 | 42 | 45 | 39 | 43 | 38 | 41 | 37 | 40 | 36 | 39 | 36 | 39 | 35 | 38 | 35 | 38 | 35 | 38 | 34 | 37 | 34 | 37 | 34 | 37 |
0.70 | 42 | 46 | 38 | 41 | 35 | 39 | 34 | 37 | 33 | 36 | 33 | 35 | 32 | 35 | 32 | 35 | 32 | 34 | 31 | 34 | 31 | 34 | 31 | 34 | 31 | 33 |
0.72 | 38 | 41 | 34 | 37 | 32 | 35 | 31 | 33 | 30 | 33 | 29 | 32 | 29 | 32 | 29 | 31 | 28 | 31 | 28 | 31 | 28 | 30 | 28 | 30 | 28 | 30 |
0.74 | 34 | 37 | 31 | 33 | 29 | 31 | 28 | 30 | 27 | 29 | 27 | 29 | 26 | 28 | 26 | 28 | 26 | 28 | 25 | 28 | 25 | 27 | 25 | 27 | 25 | 27 |
0.76 | 31 | 33 | 28 | 30 | 26 | 28 | 25 | 27 | 24 | 26 | 24 | 26 | 24 | 26 | 23 | 25 | 23 | 25 | 23 | 25 | 23 | 25 | 23 | 25 | 23 | 24 |
0.78 | 28 | 30 | 25 | 27 | 23 | 25 | 23 | 24 | 22 | 24 | 22 | 23 | 21 | 23 | 21 | 23 | 21 | 23 | 21 | 22 | 21 | 22 | 20 | 22 | 20 | 22 |
0.80 | 25 | 27 | 22 | 24 | 21 | 23 | 20 | 22 | 20 | 21 | 19 | 21 | 19 | 21 | 19 | 20 | 19 | 20 | 19 | 20 | 18 | 20 | 18 | 20 | 18 | 20 |
0.82 | 22 | 24 | 20 | 21 | 19 | 20 | 18 | 20 | 18 | 19 | 17 | 19 | 17 | 18 | 17 | 18 | 17 | 18 | 17 | 18 | 17 | 18 | 16 | 18 | 16 | 18 |
0.84 | 20 | 21 | 18 | 19 | 17 | 18 | 16 | 17 | 16 | 17 | 16 | 17 | 15 | 17 | 15 | 16 | 15 | 16 | 15 | 16 | 15 | 16 | 15 | 16 | 15 | 16 |
0.86 | 17 | 19 | 16 | 17 | 15 | 16 | 14 | 15 | 14 | 15 | 14 | 15 | 14 | 15 | 13 | 15 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 |
0.88 | 15 | 16 | 14 | 15 | 13 | 14 | 13 | 14 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 12 |
0.90 | 13 | 14 | 12 | 13 | 12 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.92 | 11 | 12 | 10 | 11 | 10 | 11 | 10 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 |
0.94 | 10 | 10 | 9 | 10 | 9 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
0.96 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.98 | 6 | 7 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
α=0.1
α=0.05
α=0.01
α=0.001
Power=0.95 :
Probability of Type I Error (α)=0.1 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 62949 | 79549 | 55955 | 70710 | 52458 | 66291 | 50360 | 63640 | 48961 | 61872 | 47962 | 60609 | 47212 | 59662 | 46630 | 58926 | 46163 | 58336 | 45782 | 57854 | 45464 | 57453 | 45195 | 57113 | 44964 | 56821 |
0.04 | 15420 | 19485 | 13707 | 17321 | 12850 | 16238 | 12336 | 15589 | 11994 | 15156 | 11749 | 14847 | 11565 | 14615 | 11423 | 14434 | 11308 | 14290 | 11215 | 14172 | 11137 | 14073 | 11071 | 13990 | 11015 | 13919 |
0.06 | 6713 | 8483 | 5967 | 7540 | 5595 | 7069 | 5371 | 6787 | 5222 | 6598 | 5115 | 6464 | 5035 | 6363 | 4973 | 6284 | 4924 | 6221 | 4883 | 6170 | 4849 | 6127 | 4820 | 6091 | 4796 | 6060 |
0.08 | 3698 | 4672 | 3287 | 4153 | 3082 | 3894 | 2959 | 3738 | 2877 | 3635 | 2818 | 3560 | 2774 | 3505 | 2740 | 3462 | 2712 | 3427 | 2690 | 3399 | 2671 | 3375 | 2656 | 3355 | 2642 | 3338 |
0.10 | 2317 | 2927 | 2060 | 2602 | 1931 | 2440 | 1854 | 2342 | 1803 | 2277 | 1766 | 2231 | 1738 | 2196 | 1717 | 2169 | 1700 | 2147 | 1686 | 2130 | 1674 | 2115 | 1664 | 2102 | 1656 | 2092 |
0.12 | 1575 | 1989 | 1400 | 1769 | 1313 | 1658 | 1260 | 1592 | 1225 | 1548 | 1200 | 1516 | 1182 | 1493 | 1167 | 1474 | 1155 | 1459 | 1146 | 1447 | 1138 | 1437 | 1131 | 1429 | 1125 | 1422 |
0.14 | 1132 | 1430 | 1006 | 1271 | 944 | 1192 | 906 | 1144 | 881 | 1113 | 863 | 1090 | 850 | 1073 | 839 | 1060 | 831 | 1049 | 824 | 1041 | 818 | 1033 | 813 | 1027 | 809 | 1022 |
0.16 | 848 | 1071 | 754 | 952 | 707 | 893 | 679 | 857 | 660 | 833 | 646 | 816 | 636 | 804 | 629 | 794 | 622 | 786 | 617 | 779 | 613 | 774 | 609 | 769 | 606 | 765 |
0.18 | 655 | 827 | 582 | 735 | 546 | 689 | 524 | 662 | 510 | 644 | 500 | 631 | 492 | 621 | 486 | 613 | 481 | 607 | 477 | 602 | 474 | 598 | 471 | 594 | 468 | 591 |
0.20 | 518 | 655 | 461 | 582 | 432 | 546 | 415 | 524 | 404 | 510 | 396 | 499 | 389 | 492 | 385 | 485 | 381 | 481 | 378 | 477 | 375 | 473 | 373 | 471 | 371 | 468 |
0.22 | 419 | 528 | 372 | 470 | 349 | 441 | 335 | 423 | 326 | 412 | 320 | 403 | 315 | 397 | 311 | 392 | 308 | 388 | 305 | 385 | 303 | 382 | 301 | 380 | 300 | 378 |
0.24 | 344 | 434 | 306 | 386 | 287 | 362 | 275 | 347 | 268 | 338 | 262 | 331 | 258 | 326 | 255 | 322 | 253 | 319 | 251 | 316 | 249 | 314 | 247 | 312 | 246 | 310 |
0.26 | 286 | 361 | 254 | 321 | 239 | 301 | 229 | 289 | 223 | 281 | 218 | 275 | 215 | 271 | 212 | 268 | 210 | 265 | 209 | 263 | 207 | 261 | 206 | 260 | 205 | 258 |
0.28 | 241 | 303 | 214 | 270 | 201 | 253 | 193 | 243 | 188 | 236 | 184 | 232 | 181 | 228 | 179 | 225 | 177 | 223 | 176 | 221 | 174 | 220 | 173 | 218 | 173 | 217 |
0.30 | 204 | 258 | 182 | 229 | 171 | 215 | 164 | 207 | 160 | 201 | 156 | 197 | 154 | 194 | 152 | 192 | 151 | 190 | 149 | 188 | 148 | 187 | 147 | 186 | 147 | 185 |
0.32 | 175 | 221 | 156 | 197 | 146 | 184 | 141 | 177 | 137 | 172 | 134 | 169 | 132 | 166 | 130 | 164 | 129 | 163 | 128 | 161 | 127 | 160 | 127 | 159 | 126 | 158 |
0.34 | 151 | 191 | 135 | 170 | 127 | 159 | 122 | 153 | 118 | 149 | 116 | 146 | 114 | 144 | 113 | 142 | 112 | 140 | 111 | 139 | 110 | 138 | 109 | 138 | 109 | 137 |
0.36 | 131 | 166 | 117 | 147 | 110 | 138 | 106 | 133 | 103 | 129 | 101 | 127 | 99 | 125 | 98 | 123 | 97 | 122 | 96 | 121 | 96 | 120 | 95 | 120 | 95 | 119 |
0.38 | 115 | 145 | 102 | 129 | 96 | 121 | 92 | 116 | 90 | 113 | 88 | 111 | 87 | 109 | 86 | 108 | 85 | 107 | 84 | 106 | 84 | 105 | 83 | 105 | 83 | 104 |
0.40 | 101 | 127 | 90 | 113 | 85 | 106 | 81 | 102 | 79 | 99 | 78 | 97 | 76 | 96 | 75 | 95 | 75 | 94 | 74 | 93 | 74 | 92 | 73 | 92 | 73 | 91 |
0.42 | 89 | 112 | 79 | 100 | 75 | 94 | 72 | 90 | 70 | 88 | 68 | 86 | 67 | 85 | 67 | 84 | 66 | 83 | 65 | 82 | 65 | 82 | 65 | 81 | 64 | 81 |
0.44 | 79 | 99 | 70 | 88 | 66 | 83 | 64 | 80 | 62 | 78 | 61 | 76 | 60 | 75 | 59 | 74 | 59 | 73 | 58 | 73 | 58 | 72 | 57 | 72 | 57 | 71 |
0.46 | 70 | 88 | 63 | 79 | 59 | 74 | 57 | 71 | 55 | 69 | 54 | 68 | 53 | 67 | 53 | 66 | 52 | 65 | 52 | 65 | 51 | 64 | 51 | 64 | 51 | 64 |
0.48 | 63 | 78 | 56 | 70 | 53 | 66 | 51 | 63 | 49 | 62 | 48 | 60 | 48 | 59 | 47 | 59 | 47 | 58 | 46 | 58 | 46 | 57 | 46 | 57 | 45 | 57 |
0.50 | 56 | 70 | 50 | 63 | 47 | 59 | 45 | 57 | 44 | 55 | 43 | 54 | 43 | 53 | 42 | 53 | 42 | 52 | 41 | 52 | 41 | 51 | 41 | 51 | 41 | 51 |
0.52 | 50 | 63 | 45 | 56 | 42 | 53 | 41 | 51 | 40 | 49 | 39 | 48 | 38 | 48 | 38 | 47 | 37 | 47 | 37 | 46 | 37 | 46 | 37 | 46 | 37 | 46 |
0.54 | 45 | 56 | 40 | 50 | 38 | 47 | 37 | 46 | 36 | 44 | 35 | 44 | 34 | 43 | 34 | 42 | 34 | 42 | 33 | 42 | 33 | 41 | 33 | 41 | 33 | 41 |
0.56 | 41 | 51 | 36 | 45 | 34 | 43 | 33 | 41 | 32 | 40 | 32 | 39 | 31 | 39 | 31 | 38 | 30 | 38 | 30 | 38 | 30 | 37 | 30 | 37 | 30 | 37 |
0.58 | 37 | 46 | 33 | 41 | 31 | 38 | 30 | 37 | 29 | 36 | 29 | 35 | 28 | 35 | 28 | 34 | 28 | 34 | 27 | 34 | 27 | 34 | 27 | 33 | 27 | 33 |
0.60 | 33 | 41 | 30 | 37 | 28 | 35 | 27 | 33 | 26 | 33 | 26 | 32 | 25 | 32 | 25 | 31 | 25 | 31 | 25 | 31 | 25 | 30 | 24 | 30 | 24 | 30 |
0.62 | 30 | 37 | 27 | 33 | 25 | 31 | 24 | 30 | 24 | 29 | 23 | 29 | 23 | 29 | 23 | 28 | 23 | 28 | 22 | 28 | 22 | 28 | 22 | 27 | 22 | 27 |
0.64 | 27 | 34 | 24 | 30 | 23 | 28 | 22 | 27 | 22 | 27 | 21 | 26 | 21 | 26 | 21 | 26 | 21 | 25 | 20 | 25 | 20 | 25 | 20 | 25 | 20 | 25 |
0.66 | 25 | 30 | 22 | 27 | 21 | 26 | 20 | 25 | 20 | 24 | 19 | 24 | 19 | 23 | 19 | 23 | 19 | 23 | 19 | 23 | 18 | 23 | 18 | 23 | 18 | 22 |
0.68 | 22 | 28 | 20 | 25 | 19 | 23 | 18 | 23 | 18 | 22 | 18 | 22 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 21 | 17 | 20 | 17 | 20 |
0.70 | 20 | 25 | 18 | 22 | 17 | 21 | 17 | 20 | 16 | 20 | 16 | 20 | 16 | 19 | 16 | 19 | 15 | 19 | 15 | 19 | 15 | 19 | 15 | 19 | 15 | 18 |
0.72 | 18 | 23 | 17 | 20 | 16 | 19 | 15 | 19 | 15 | 18 | 15 | 18 | 14 | 18 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 17 |
0.74 | 17 | 20 | 15 | 18 | 14 | 17 | 14 | 17 | 14 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 16 | 13 | 15 | 13 | 15 | 13 | 15 |
0.76 | 15 | 18 | 14 | 17 | 13 | 16 | 13 | 15 | 12 | 15 | 12 | 15 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 |
0.78 | 14 | 17 | 12 | 15 | 12 | 14 | 11 | 14 | 11 | 14 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 13 |
0.80 | 12 | 15 | 11 | 14 | 11 | 13 | 10 | 13 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 12 | 10 | 11 | 10 | 11 |
0.82 | 11 | 14 | 10 | 12 | 10 | 12 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 11 | 9 | 10 | 9 | 10 | 9 | 10 |
0.84 | 10 | 12 | 9 | 11 | 9 | 11 | 9 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 10 | 8 | 9 | 8 | 9 | 8 | 9 |
0.86 | 9 | 11 | 8 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 9 | 7 | 8 |
0.88 | 8 | 10 | 8 | 9 | 7 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.90 | 7 | 9 | 7 | 8 | 7 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.92 | 7 | 8 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.94 | 6 | 7 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
0.96 | 5 | 6 | 5 | 5 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 5 |
0.98 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Power=0.95 :
Probability of Type I Error (α)=0.05 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 79549 | 95517 | 70710 | 84904 | 66291 | 79598 | 63640 | 76414 | 61872 | 74291 | 60609 | 72775 | 59662 | 71638 | 58926 | 70754 | 58336 | 70046 | 57854 | 69467 | 57453 | 68985 | 57113 | 68577 | 56821 | 68227 |
0.04 | 19485 | 23396 | 17321 | 20797 | 16238 | 19497 | 15589 | 18717 | 15156 | 18198 | 14847 | 17826 | 14615 | 17548 | 14434 | 17331 | 14290 | 17158 | 14172 | 17016 | 14073 | 16898 | 13990 | 16798 | 13919 | 16712 |
0.06 | 8483 | 10185 | 7540 | 9054 | 7069 | 8488 | 6787 | 8148 | 6598 | 7922 | 6464 | 7761 | 6363 | 7639 | 6284 | 7545 | 6221 | 7470 | 6170 | 7408 | 6127 | 7356 | 6091 | 7313 | 6060 | 7276 |
0.08 | 4672 | 5610 | 4153 | 4987 | 3894 | 4675 | 3738 | 4488 | 3635 | 4364 | 3560 | 4275 | 3505 | 4208 | 3462 | 4156 | 3427 | 4114 | 3399 | 4080 | 3375 | 4052 | 3355 | 4028 | 3338 | 4008 |
0.10 | 2927 | 3514 | 2602 | 3124 | 2440 | 2929 | 2342 | 2812 | 2277 | 2734 | 2231 | 2678 | 2196 | 2636 | 2169 | 2604 | 2147 | 2578 | 2130 | 2557 | 2115 | 2539 | 2102 | 2524 | 2092 | 2511 |
0.12 | 1989 | 2388 | 1769 | 2123 | 1658 | 1991 | 1592 | 1911 | 1548 | 1858 | 1516 | 1820 | 1493 | 1792 | 1474 | 1770 | 1459 | 1752 | 1447 | 1737 | 1437 | 1725 | 1429 | 1715 | 1422 | 1707 |
0.14 | 1430 | 1716 | 1271 | 1526 | 1192 | 1431 | 1144 | 1374 | 1113 | 1335 | 1090 | 1308 | 1073 | 1288 | 1060 | 1272 | 1049 | 1259 | 1041 | 1249 | 1033 | 1240 | 1027 | 1233 | 1022 | 1227 |
0.16 | 1071 | 1285 | 952 | 1142 | 893 | 1071 | 857 | 1028 | 833 | 1000 | 816 | 980 | 804 | 964 | 794 | 952 | 786 | 943 | 779 | 935 | 774 | 929 | 769 | 923 | 765 | 919 |
0.18 | 827 | 992 | 735 | 882 | 689 | 827 | 662 | 794 | 644 | 772 | 631 | 757 | 621 | 745 | 613 | 736 | 607 | 728 | 602 | 722 | 598 | 717 | 594 | 713 | 591 | 710 |
0.20 | 655 | 785 | 582 | 698 | 546 | 655 | 524 | 629 | 510 | 611 | 499 | 599 | 492 | 590 | 485 | 582 | 481 | 577 | 477 | 572 | 473 | 568 | 471 | 565 | 468 | 562 |
0.22 | 528 | 634 | 470 | 564 | 441 | 529 | 423 | 508 | 412 | 494 | 403 | 484 | 397 | 476 | 392 | 470 | 388 | 466 | 385 | 462 | 382 | 459 | 380 | 456 | 378 | 454 |
0.24 | 434 | 520 | 386 | 463 | 362 | 434 | 347 | 417 | 338 | 405 | 331 | 397 | 326 | 391 | 322 | 386 | 319 | 382 | 316 | 379 | 314 | 376 | 312 | 374 | 310 | 372 |
0.26 | 361 | 432 | 321 | 385 | 301 | 361 | 289 | 346 | 281 | 337 | 275 | 330 | 271 | 325 | 268 | 321 | 265 | 318 | 263 | 315 | 261 | 313 | 260 | 311 | 258 | 310 |
0.28 | 303 | 364 | 270 | 324 | 253 | 304 | 243 | 291 | 236 | 283 | 232 | 278 | 228 | 273 | 225 | 270 | 223 | 267 | 221 | 265 | 220 | 263 | 218 | 262 | 217 | 261 |
0.30 | 258 | 309 | 229 | 275 | 215 | 258 | 207 | 248 | 201 | 241 | 197 | 236 | 194 | 232 | 192 | 229 | 190 | 227 | 188 | 225 | 187 | 224 | 186 | 223 | 185 | 221 |
0.32 | 221 | 265 | 197 | 235 | 184 | 221 | 177 | 212 | 172 | 206 | 169 | 202 | 166 | 199 | 164 | 197 | 163 | 195 | 161 | 193 | 160 | 192 | 159 | 191 | 158 | 190 |
0.34 | 191 | 228 | 170 | 203 | 159 | 191 | 153 | 183 | 149 | 178 | 146 | 175 | 144 | 172 | 142 | 170 | 140 | 168 | 139 | 167 | 138 | 166 | 138 | 165 | 137 | 164 |
0.36 | 166 | 198 | 147 | 176 | 138 | 166 | 133 | 159 | 129 | 155 | 127 | 152 | 125 | 149 | 123 | 147 | 122 | 146 | 121 | 145 | 120 | 144 | 120 | 143 | 119 | 142 |
0.38 | 145 | 173 | 129 | 154 | 121 | 145 | 116 | 139 | 113 | 135 | 111 | 132 | 109 | 130 | 108 | 129 | 107 | 128 | 106 | 127 | 105 | 126 | 105 | 125 | 104 | 124 |
0.40 | 127 | 152 | 113 | 135 | 106 | 127 | 102 | 122 | 99 | 119 | 97 | 116 | 96 | 115 | 95 | 113 | 94 | 112 | 93 | 111 | 92 | 110 | 92 | 110 | 91 | 109 |
0.42 | 112 | 134 | 100 | 119 | 94 | 112 | 90 | 108 | 88 | 105 | 86 | 103 | 85 | 101 | 84 | 100 | 83 | 99 | 82 | 98 | 82 | 97 | 81 | 97 | 81 | 96 |
0.44 | 99 | 118 | 88 | 106 | 83 | 99 | 80 | 95 | 78 | 93 | 76 | 91 | 75 | 89 | 74 | 88 | 73 | 88 | 73 | 87 | 72 | 86 | 72 | 86 | 71 | 85 |
0.46 | 88 | 105 | 79 | 94 | 74 | 88 | 71 | 85 | 69 | 82 | 68 | 81 | 67 | 80 | 66 | 79 | 65 | 78 | 65 | 77 | 64 | 77 | 64 | 76 | 64 | 76 |
0.48 | 78 | 94 | 70 | 84 | 66 | 78 | 63 | 75 | 62 | 73 | 60 | 72 | 59 | 71 | 59 | 70 | 58 | 69 | 58 | 69 | 57 | 68 | 57 | 68 | 57 | 68 |
0.50 | 70 | 84 | 63 | 75 | 59 | 70 | 57 | 67 | 55 | 66 | 54 | 64 | 53 | 63 | 53 | 63 | 52 | 62 | 52 | 62 | 51 | 61 | 51 | 61 | 51 | 60 |
0.52 | 63 | 75 | 56 | 67 | 53 | 63 | 51 | 60 | 49 | 59 | 48 | 58 | 48 | 57 | 47 | 56 | 47 | 56 | 46 | 55 | 46 | 55 | 46 | 54 | 46 | 54 |
0.54 | 56 | 67 | 50 | 60 | 47 | 56 | 46 | 54 | 44 | 53 | 44 | 52 | 43 | 51 | 42 | 50 | 42 | 50 | 42 | 50 | 41 | 49 | 41 | 49 | 41 | 49 |
0.56 | 51 | 60 | 45 | 54 | 43 | 51 | 41 | 49 | 40 | 47 | 39 | 47 | 39 | 46 | 38 | 45 | 38 | 45 | 38 | 45 | 37 | 44 | 37 | 44 | 37 | 44 |
0.58 | 46 | 54 | 41 | 49 | 38 | 46 | 37 | 44 | 36 | 43 | 35 | 42 | 35 | 41 | 34 | 41 | 34 | 40 | 34 | 40 | 34 | 40 | 33 | 40 | 33 | 40 |
0.60 | 41 | 49 | 37 | 44 | 35 | 41 | 33 | 40 | 33 | 39 | 32 | 38 | 32 | 37 | 31 | 37 | 31 | 37 | 31 | 36 | 30 | 36 | 30 | 36 | 30 | 36 |
0.62 | 37 | 44 | 33 | 40 | 31 | 37 | 30 | 36 | 29 | 35 | 29 | 34 | 29 | 34 | 28 | 33 | 28 | 33 | 28 | 33 | 28 | 33 | 27 | 32 | 27 | 32 |
0.64 | 34 | 40 | 30 | 36 | 28 | 34 | 27 | 32 | 27 | 32 | 26 | 31 | 26 | 31 | 26 | 30 | 25 | 30 | 25 | 30 | 25 | 29 | 25 | 29 | 25 | 29 |
0.66 | 30 | 36 | 27 | 32 | 26 | 30 | 25 | 29 | 24 | 29 | 24 | 28 | 23 | 28 | 23 | 27 | 23 | 27 | 23 | 27 | 23 | 27 | 23 | 27 | 22 | 26 |
0.68 | 28 | 33 | 25 | 29 | 23 | 28 | 23 | 27 | 22 | 26 | 22 | 25 | 21 | 25 | 21 | 25 | 21 | 25 | 21 | 24 | 21 | 24 | 20 | 24 | 20 | 24 |
0.70 | 25 | 29 | 22 | 26 | 21 | 25 | 20 | 24 | 20 | 23 | 20 | 23 | 19 | 23 | 19 | 22 | 19 | 22 | 19 | 22 | 19 | 22 | 19 | 22 | 18 | 22 |
0.72 | 23 | 27 | 20 | 24 | 19 | 23 | 19 | 22 | 18 | 21 | 18 | 21 | 18 | 21 | 17 | 20 | 17 | 20 | 17 | 20 | 17 | 20 | 17 | 20 | 17 | 20 |
0.74 | 20 | 24 | 18 | 22 | 17 | 20 | 17 | 20 | 16 | 19 | 16 | 19 | 16 | 19 | 16 | 18 | 16 | 18 | 16 | 18 | 15 | 18 | 15 | 18 | 15 | 18 |
0.76 | 18 | 22 | 17 | 20 | 16 | 18 | 15 | 18 | 15 | 17 | 15 | 17 | 14 | 17 | 14 | 17 | 14 | 17 | 14 | 16 | 14 | 16 | 14 | 16 | 14 | 16 |
0.78 | 17 | 20 | 15 | 18 | 14 | 17 | 14 | 16 | 14 | 16 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 | 13 | 15 |
0.80 | 15 | 18 | 14 | 16 | 13 | 15 | 13 | 15 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 14 | 12 | 13 | 12 | 13 | 11 | 13 | 11 | 13 |
0.82 | 14 | 16 | 12 | 14 | 12 | 14 | 11 | 13 | 11 | 13 | 11 | 13 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 10 | 12 | 10 | 12 | 10 | 12 |
0.84 | 12 | 14 | 11 | 13 | 11 | 12 | 10 | 12 | 10 | 12 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 9 | 11 | 9 | 11 | 9 | 11 |
0.86 | 11 | 13 | 10 | 11 | 9 | 11 | 9 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 8 | 10 |
0.88 | 10 | 11 | 9 | 10 | 9 | 10 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 |
0.90 | 9 | 10 | 8 | 9 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.92 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 |
0.94 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 6 |
0.96 | 6 | 6 | 5 | 6 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
0.98 | 5 | 5 | 4 | 5 | 4 | 5 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Power=0.95 :
Probability of Type I Error (α)=0.01 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 115919 | 130940 | 103040 | 116391 | 96600 | 109117 | 92736 | 104752 | 90160 | 101843 | 88320 | 99764 | 86940 | 98206 | 85867 | 96993 | 85008 | 96023 | 84306 | 95230 | 83720 | 94568 | 83225 | 94009 | 82800 | 93529 |
0.04 | 28393 | 32072 | 25239 | 28509 | 23661 | 26727 | 22715 | 25658 | 22084 | 24946 | 21634 | 24437 | 21296 | 24055 | 21033 | 23758 | 20822 | 23520 | 20650 | 23326 | 20507 | 23164 | 20386 | 23027 | 20282 | 22909 |
0.06 | 12360 | 13961 | 10987 | 12410 | 10300 | 11635 | 9888 | 11170 | 9614 | 10859 | 9418 | 10638 | 9271 | 10472 | 9156 | 10342 | 9065 | 10239 | 8990 | 10154 | 8927 | 10084 | 8875 | 10024 | 8829 | 9973 |
0.08 | 6807 | 7689 | 6051 | 6835 | 5673 | 6408 | 5446 | 6152 | 5295 | 5981 | 5187 | 5859 | 5106 | 5768 | 5043 | 5696 | 4993 | 5639 | 4952 | 5593 | 4917 | 5554 | 4888 | 5521 | 4863 | 5493 |
0.10 | 4264 | 4817 | 3791 | 4282 | 3554 | 4014 | 3412 | 3854 | 3317 | 3747 | 3250 | 3670 | 3199 | 3613 | 3160 | 3569 | 3128 | 3533 | 3102 | 3504 | 3081 | 3479 | 3062 | 3459 | 3047 | 3441 |
0.12 | 2898 | 3273 | 2576 | 2909 | 2415 | 2728 | 2319 | 2619 | 2254 | 2546 | 2208 | 2494 | 2174 | 2455 | 2147 | 2425 | 2126 | 2401 | 2108 | 2381 | 2093 | 2364 | 2081 | 2350 | 2070 | 2338 |
0.14 | 2082 | 2352 | 1851 | 2091 | 1736 | 1960 | 1666 | 1882 | 1620 | 1830 | 1587 | 1792 | 1562 | 1765 | 1543 | 1743 | 1528 | 1725 | 1515 | 1711 | 1505 | 1699 | 1496 | 1689 | 1488 | 1681 |
0.16 | 1559 | 1761 | 1386 | 1565 | 1299 | 1468 | 1248 | 1409 | 1213 | 1370 | 1188 | 1342 | 1170 | 1321 | 1155 | 1305 | 1144 | 1292 | 1134 | 1281 | 1127 | 1272 | 1120 | 1265 | 1114 | 1258 |
0.18 | 1204 | 1359 | 1070 | 1209 | 1004 | 1133 | 964 | 1088 | 937 | 1058 | 918 | 1036 | 903 | 1020 | 892 | 1008 | 883 | 998 | 876 | 989 | 870 | 983 | 865 | 977 | 861 | 972 |
0.20 | 953 | 1076 | 847 | 957 | 794 | 897 | 763 | 861 | 742 | 837 | 726 | 820 | 715 | 807 | 706 | 798 | 699 | 790 | 694 | 783 | 689 | 778 | 685 | 773 | 681 | 769 |
0.22 | 769 | 868 | 684 | 772 | 641 | 724 | 616 | 695 | 599 | 676 | 586 | 662 | 577 | 652 | 570 | 644 | 565 | 637 | 560 | 632 | 556 | 628 | 553 | 624 | 550 | 621 |
0.24 | 631 | 712 | 561 | 633 | 526 | 594 | 505 | 570 | 491 | 554 | 481 | 543 | 474 | 535 | 468 | 528 | 463 | 523 | 459 | 519 | 456 | 515 | 453 | 512 | 451 | 509 |
0.26 | 524 | 592 | 466 | 526 | 437 | 494 | 420 | 474 | 408 | 461 | 400 | 452 | 394 | 445 | 389 | 439 | 385 | 435 | 382 | 431 | 379 | 428 | 377 | 426 | 375 | 424 |
0.28 | 441 | 498 | 392 | 443 | 368 | 415 | 353 | 399 | 343 | 388 | 337 | 380 | 331 | 374 | 327 | 369 | 324 | 366 | 321 | 363 | 319 | 360 | 317 | 358 | 316 | 356 |
0.30 | 374 | 423 | 333 | 376 | 312 | 353 | 300 | 339 | 292 | 329 | 286 | 323 | 281 | 318 | 278 | 314 | 275 | 311 | 273 | 308 | 271 | 306 | 270 | 304 | 268 | 303 |
0.32 | 321 | 362 | 285 | 322 | 268 | 302 | 257 | 290 | 250 | 282 | 245 | 276 | 241 | 272 | 238 | 269 | 236 | 266 | 234 | 264 | 232 | 262 | 231 | 260 | 230 | 259 |
0.34 | 277 | 312 | 246 | 278 | 231 | 260 | 222 | 250 | 216 | 243 | 211 | 238 | 208 | 235 | 205 | 232 | 203 | 229 | 202 | 228 | 200 | 226 | 199 | 225 | 198 | 224 |
0.36 | 240 | 271 | 214 | 241 | 200 | 226 | 193 | 217 | 187 | 211 | 183 | 207 | 181 | 204 | 178 | 201 | 177 | 199 | 175 | 198 | 174 | 196 | 173 | 195 | 172 | 194 |
0.38 | 210 | 236 | 187 | 210 | 175 | 197 | 168 | 190 | 164 | 184 | 160 | 181 | 158 | 178 | 156 | 176 | 154 | 174 | 153 | 173 | 152 | 171 | 151 | 170 | 150 | 170 |
0.40 | 184 | 207 | 164 | 185 | 154 | 173 | 148 | 166 | 144 | 162 | 141 | 159 | 138 | 156 | 137 | 154 | 135 | 153 | 134 | 151 | 133 | 150 | 133 | 150 | 132 | 149 |
0.42 | 162 | 183 | 144 | 163 | 135 | 153 | 130 | 147 | 127 | 143 | 124 | 140 | 122 | 138 | 121 | 136 | 119 | 135 | 118 | 133 | 118 | 133 | 117 | 132 | 116 | 131 |
0.44 | 143 | 161 | 128 | 144 | 120 | 135 | 115 | 130 | 112 | 126 | 110 | 124 | 108 | 122 | 107 | 120 | 106 | 119 | 105 | 118 | 104 | 117 | 104 | 117 | 103 | 116 |
0.46 | 127 | 143 | 113 | 128 | 106 | 120 | 102 | 115 | 99 | 112 | 97 | 110 | 96 | 108 | 95 | 107 | 94 | 106 | 93 | 105 | 92 | 104 | 92 | 104 | 92 | 103 |
0.48 | 113 | 127 | 101 | 114 | 95 | 107 | 91 | 102 | 89 | 100 | 87 | 98 | 85 | 96 | 84 | 95 | 84 | 94 | 83 | 93 | 82 | 93 | 82 | 92 | 82 | 92 |
0.50 | 101 | 114 | 90 | 101 | 85 | 95 | 81 | 91 | 79 | 89 | 78 | 87 | 76 | 86 | 75 | 85 | 75 | 84 | 74 | 83 | 74 | 83 | 73 | 82 | 73 | 82 |
0.52 | 90 | 102 | 81 | 91 | 76 | 85 | 73 | 82 | 71 | 80 | 69 | 78 | 68 | 77 | 68 | 76 | 67 | 75 | 66 | 75 | 66 | 74 | 66 | 74 | 65 | 73 |
0.54 | 81 | 91 | 72 | 81 | 68 | 76 | 65 | 73 | 64 | 71 | 62 | 70 | 61 | 69 | 61 | 68 | 60 | 67 | 60 | 67 | 59 | 67 | 59 | 66 | 59 | 66 |
0.56 | 73 | 82 | 65 | 73 | 61 | 69 | 59 | 66 | 57 | 64 | 56 | 63 | 55 | 62 | 54 | 61 | 54 | 61 | 54 | 60 | 53 | 60 | 53 | 59 | 53 | 59 |
0.58 | 65 | 74 | 58 | 66 | 55 | 62 | 53 | 59 | 51 | 58 | 50 | 57 | 50 | 56 | 49 | 55 | 49 | 55 | 48 | 54 | 48 | 54 | 48 | 53 | 47 | 53 |
0.60 | 59 | 66 | 53 | 59 | 49 | 56 | 48 | 53 | 46 | 52 | 45 | 51 | 45 | 50 | 44 | 50 | 44 | 49 | 43 | 49 | 43 | 48 | 43 | 48 | 43 | 48 |
0.62 | 53 | 60 | 47 | 53 | 45 | 50 | 43 | 48 | 42 | 47 | 41 | 46 | 40 | 45 | 40 | 45 | 40 | 44 | 39 | 44 | 39 | 44 | 39 | 43 | 39 | 43 |
0.64 | 48 | 54 | 43 | 48 | 40 | 45 | 39 | 43 | 38 | 42 | 37 | 42 | 36 | 41 | 36 | 40 | 36 | 40 | 35 | 40 | 35 | 39 | 35 | 39 | 35 | 39 |
0.66 | 43 | 48 | 39 | 43 | 36 | 41 | 35 | 39 | 34 | 38 | 33 | 37 | 33 | 37 | 33 | 37 | 32 | 36 | 32 | 36 | 32 | 36 | 32 | 35 | 32 | 35 |
0.68 | 39 | 44 | 35 | 39 | 33 | 37 | 32 | 35 | 31 | 35 | 30 | 34 | 30 | 33 | 29 | 33 | 29 | 33 | 29 | 32 | 29 | 32 | 29 | 32 | 29 | 32 |
0.70 | 35 | 39 | 32 | 35 | 30 | 33 | 29 | 32 | 28 | 31 | 27 | 31 | 27 | 30 | 27 | 30 | 26 | 30 | 26 | 29 | 26 | 29 | 26 | 29 | 26 | 29 |
0.72 | 32 | 35 | 28 | 32 | 27 | 30 | 26 | 29 | 25 | 28 | 25 | 28 | 24 | 27 | 24 | 27 | 24 | 27 | 24 | 26 | 24 | 26 | 23 | 26 | 23 | 26 |
0.74 | 29 | 32 | 26 | 29 | 24 | 27 | 23 | 26 | 23 | 25 | 22 | 25 | 22 | 25 | 22 | 24 | 22 | 24 | 21 | 24 | 21 | 24 | 21 | 24 | 21 | 24 |
0.76 | 26 | 29 | 23 | 26 | 22 | 24 | 21 | 23 | 21 | 23 | 20 | 22 | 20 | 22 | 20 | 22 | 20 | 22 | 19 | 22 | 19 | 21 | 19 | 21 | 19 | 21 |
0.78 | 23 | 26 | 21 | 23 | 20 | 22 | 19 | 21 | 19 | 21 | 18 | 20 | 18 | 20 | 18 | 20 | 18 | 20 | 18 | 19 | 17 | 19 | 17 | 19 | 17 | 19 |
0.80 | 21 | 23 | 19 | 21 | 18 | 20 | 17 | 19 | 17 | 19 | 16 | 18 | 16 | 18 | 16 | 18 | 16 | 18 | 16 | 18 | 16 | 17 | 16 | 17 | 16 | 17 |
0.82 | 19 | 21 | 17 | 19 | 16 | 18 | 15 | 17 | 15 | 17 | 15 | 16 | 15 | 16 | 14 | 16 | 14 | 16 | 14 | 16 | 14 | 16 | 14 | 16 | 14 | 15 |
0.84 | 17 | 18 | 15 | 17 | 14 | 16 | 14 | 15 | 13 | 15 | 13 | 15 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 |
0.86 | 15 | 16 | 13 | 15 | 13 | 14 | 12 | 14 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 11 | 13 | 11 | 13 | 11 | 12 | 11 | 12 | 11 | 12 |
0.88 | 13 | 14 | 12 | 13 | 11 | 12 | 11 | 12 | 11 | 12 | 11 | 12 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.90 | 11 | 13 | 10 | 11 | 10 | 11 | 10 | 11 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 10 |
0.92 | 10 | 11 | 9 | 10 | 9 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 9 | 8 | 8 |
0.94 | 8 | 9 | 8 | 9 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
0.96 | 7 | 8 | 7 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
0.98 | 6 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Power=0.95 :
Probability of Type I Error (α)=0.001 :
k=number of variables :
alpha=Cronbach's Alpha
| k=3 | k=4 | k=5 | k=6 | k=7 | k=8 | k=9 | k=10 | k=11 | k=12 | k=13 | k=14 | k=15 |
alpha | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail | 1 tail | 2 tail |
0.02 | 164802 | 179039 | 146491 | 159146 | 137335 | 149200 | 131842 | 143232 | 128180 | 139253 | 125564 | 136412 | 123602 | 134280 | 122076 | 132622 | 120856 | 131296 | 119857 | 130211 | 119024 | 129307 | 118320 | 128542 | 117716 | 127886 |
0.04 | 40366 | 43853 | 35881 | 38981 | 33639 | 36544 | 32293 | 35083 | 31396 | 34108 | 30755 | 33412 | 30275 | 32890 | 29901 | 32484 | 29602 | 32159 | 29358 | 31894 | 29154 | 31672 | 28981 | 31485 | 28833 | 31324 |
0.06 | 17571 | 19089 | 15619 | 16968 | 14643 | 15908 | 14057 | 15272 | 13667 | 14848 | 13388 | 14545 | 13179 | 14317 | 13016 | 14141 | 12886 | 13999 | 12780 | 13884 | 12691 | 13787 | 12616 | 13706 | 12552 | 13636 |
0.08 | 9677 | 10513 | 8602 | 9345 | 8065 | 8761 | 7742 | 8411 | 7527 | 8177 | 7374 | 8010 | 7258 | 7885 | 7169 | 7788 | 7097 | 7710 | 7039 | 7646 | 6990 | 7593 | 6948 | 7548 | 6913 | 7510 |
0.10 | 6062 | 6585 | 5389 | 5854 | 5052 | 5488 | 4850 | 5269 | 4715 | 5122 | 4619 | 5018 | 4547 | 4940 | 4491 | 4879 | 4446 | 4830 | 4409 | 4790 | 4379 | 4757 | 4353 | 4729 | 4331 | 4704 |
0.12 | 4119 | 4474 | 3661 | 3977 | 3433 | 3729 | 3295 | 3580 | 3204 | 3480 | 3139 | 3410 | 3090 | 3356 | 3051 | 3315 | 3021 | 3282 | 2996 | 3255 | 2975 | 3232 | 2958 | 3213 | 2943 | 3197 |
0.14 | 2959 | 3215 | 2631 | 2858 | 2467 | 2679 | 2368 | 2572 | 2302 | 2501 | 2255 | 2450 | 2220 | 2412 | 2193 | 2382 | 2171 | 2358 | 2153 | 2339 | 2138 | 2323 | 2125 | 2309 | 2115 | 2297 |
0.16 | 2215 | 2406 | 1969 | 2139 | 1846 | 2006 | 1773 | 1926 | 1723 | 1872 | 1688 | 1834 | 1662 | 1805 | 1642 | 1783 | 1625 | 1765 | 1612 | 1751 | 1601 | 1739 | 1591 | 1728 | 1583 | 1720 |
0.18 | 1710 | 1858 | 1521 | 1652 | 1426 | 1549 | 1369 | 1487 | 1331 | 1446 | 1304 | 1416 | 1283 | 1394 | 1268 | 1377 | 1255 | 1363 | 1245 | 1352 | 1236 | 1343 | 1229 | 1335 | 1222 | 1328 |
0.20 | 1353 | 1470 | 1203 | 1307 | 1128 | 1225 | 1083 | 1177 | 1053 | 1144 | 1032 | 1121 | 1016 | 1103 | 1003 | 1090 | 993 | 1079 | 985 | 1070 | 978 | 1062 | 972 | 1056 | 967 | 1051 |
0.22 | 1092 | 1186 | 971 | 1055 | 910 | 989 | 874 | 949 | 850 | 923 | 833 | 904 | 820 | 890 | 810 | 879 | 802 | 871 | 795 | 863 | 789 | 857 | 785 | 852 | 781 | 848 |
0.24 | 896 | 973 | 796 | 865 | 747 | 811 | 717 | 779 | 697 | 757 | 683 | 742 | 672 | 730 | 664 | 721 | 657 | 714 | 652 | 708 | 648 | 703 | 644 | 699 | 640 | 696 |
0.26 | 744 | 808 | 662 | 719 | 621 | 674 | 596 | 647 | 580 | 629 | 568 | 617 | 559 | 607 | 552 | 600 | 547 | 594 | 542 | 589 | 538 | 585 | 535 | 581 | 532 | 578 |
0.28 | 626 | 680 | 557 | 604 | 522 | 567 | 501 | 544 | 487 | 529 | 477 | 518 | 470 | 510 | 464 | 504 | 460 | 499 | 456 | 495 | 453 | 492 | 450 | 489 | 448 | 486 |
0.30 | 531 | 577 | 472 | 513 | 443 | 481 | 425 | 462 | 414 | 449 | 405 | 440 | 399 | 433 | 394 | 428 | 390 | 424 | 387 | 420 | 384 | 417 | 382 | 415 | 380 | 413 |
0.32 | 455 | 494 | 404 | 439 | 379 | 412 | 364 | 396 | 354 | 385 | 347 | 377 | 342 | 371 | 337 | 366 | 334 | 363 | 331 | 360 | 329 | 357 | 327 | 355 | 326 | 353 |
0.34 | 392 | 426 | 349 | 379 | 327 | 355 | 314 | 341 | 306 | 332 | 299 | 325 | 295 | 320 | 291 | 316 | 288 | 313 | 286 | 310 | 284 | 308 | 282 | 306 | 281 | 305 |
0.36 | 340 | 369 | 303 | 329 | 284 | 308 | 273 | 296 | 265 | 288 | 260 | 282 | 256 | 278 | 253 | 274 | 250 | 272 | 248 | 269 | 246 | 267 | 245 | 266 | 244 | 265 |
0.38 | 297 | 322 | 264 | 287 | 248 | 269 | 238 | 258 | 231 | 251 | 227 | 246 | 223 | 242 | 221 | 239 | 218 | 237 | 217 | 235 | 215 | 233 | 214 | 232 | 213 | 231 |
0.40 | 260 | 283 | 232 | 251 | 217 | 236 | 209 | 227 | 203 | 220 | 199 | 216 | 196 | 213 | 193 | 210 | 192 | 208 | 190 | 206 | 189 | 205 | 188 | 204 | 187 | 203 |
0.42 | 229 | 249 | 204 | 221 | 191 | 208 | 184 | 200 | 179 | 194 | 175 | 190 | 173 | 187 | 170 | 185 | 169 | 183 | 167 | 182 | 166 | 180 | 165 | 179 | 164 | 178 |
0.44 | 203 | 220 | 180 | 196 | 169 | 184 | 163 | 176 | 158 | 172 | 155 | 168 | 153 | 166 | 151 | 164 | 149 | 162 | 148 | 161 | 147 | 159 | 146 | 159 | 145 | 158 |
0.46 | 180 | 195 | 160 | 174 | 150 | 163 | 144 | 156 | 140 | 152 | 137 | 149 | 135 | 147 | 134 | 145 | 132 | 144 | 131 | 142 | 130 | 141 | 130 | 141 | 129 | 140 |
0.48 | 160 | 173 | 142 | 154 | 134 | 145 | 128 | 139 | 125 | 135 | 122 | 133 | 120 | 131 | 119 | 129 | 118 | 128 | 117 | 127 | 116 | 126 | 115 | 125 | 115 | 125 |
0.50 | 142 | 155 | 127 | 138 | 119 | 129 | 114 | 124 | 111 | 121 | 109 | 118 | 107 | 117 | 106 | 115 | 105 | 114 | 104 | 113 | 104 | 112 | 103 | 112 | 102 | 111 |
0.52 | 127 | 138 | 113 | 123 | 107 | 116 | 102 | 111 | 100 | 108 | 98 | 106 | 96 | 104 | 95 | 103 | 94 | 102 | 93 | 101 | 93 | 100 | 92 | 100 | 92 | 99 |
0.54 | 114 | 124 | 102 | 110 | 95 | 103 | 92 | 99 | 89 | 97 | 87 | 95 | 86 | 93 | 85 | 92 | 84 | 91 | 84 | 91 | 83 | 90 | 83 | 90 | 82 | 89 |
0.56 | 102 | 111 | 91 | 99 | 86 | 93 | 82 | 89 | 80 | 87 | 79 | 85 | 77 | 84 | 76 | 83 | 76 | 82 | 75 | 81 | 75 | 81 | 74 | 80 | 74 | 80 |
0.58 | 92 | 100 | 82 | 89 | 77 | 83 | 74 | 80 | 72 | 78 | 71 | 76 | 70 | 75 | 69 | 74 | 68 | 74 | 68 | 73 | 67 | 73 | 67 | 72 | 66 | 72 |
0.60 | 83 | 90 | 74 | 80 | 69 | 75 | 67 | 72 | 65 | 70 | 64 | 69 | 63 | 68 | 62 | 67 | 61 | 66 | 61 | 66 | 60 | 65 | 60 | 65 | 60 | 65 |
0.62 | 74 | 81 | 66 | 72 | 62 | 68 | 60 | 65 | 58 | 63 | 57 | 62 | 56 | 61 | 56 | 60 | 55 | 60 | 55 | 59 | 54 | 59 | 54 | 59 | 54 | 58 |
0.64 | 67 | 73 | 60 | 65 | 56 | 61 | 54 | 59 | 53 | 57 | 52 | 56 | 51 | 55 | 50 | 54 | 50 | 54 | 49 | 53 | 49 | 53 | 49 | 53 | 49 | 53 |
0.66 | 60 | 65 | 54 | 58 | 51 | 55 | 49 | 53 | 47 | 51 | 47 | 50 | 46 | 50 | 45 | 49 | 45 | 49 | 45 | 48 | 44 | 48 | 44 | 48 | 44 | 47 |
0.68 | 54 | 59 | 49 | 53 | 46 | 49 | 44 | 48 | 43 | 46 | 42 | 45 | 41 | 45 | 41 | 44 | 40 | 44 | 40 | 43 | 40 | 43 | 40 | 43 | 40 | 43 |
0.70 | 49 | 53 | 44 | 47 | 41 | 45 | 40 | 43 | 39 | 42 | 38 | 41 | 37 | 40 | 37 | 40 | 37 | 39 | 36 | 39 | 36 | 39 | 36 | 39 | 36 | 39 |
0.72 | 44 | 48 | 39 | 43 | 37 | 40 | 36 | 39 | 35 | 38 | 34 | 37 | 34 | 36 | 33 | 36 | 33 | 36 | 33 | 35 | 32 | 35 | 32 | 35 | 32 | 35 |
0.74 | 40 | 43 | 35 | 38 | 33 | 36 | 32 | 35 | 31 | 34 | 31 | 33 | 30 | 33 | 30 | 32 | 30 | 32 | 29 | 32 | 29 | 32 | 29 | 31 | 29 | 31 |
0.76 | 36 | 38 | 32 | 34 | 30 | 32 | 29 | 31 | 28 | 30 | 28 | 30 | 27 | 29 | 27 | 29 | 27 | 29 | 27 | 29 | 26 | 28 | 26 | 28 | 26 | 28 |
0.78 | 32 | 34 | 29 | 31 | 27 | 29 | 26 | 28 | 25 | 27 | 25 | 27 | 25 | 26 | 24 | 26 | 24 | 26 | 24 | 26 | 24 | 26 | 24 | 25 | 23 | 25 |
0.80 | 28 | 31 | 26 | 28 | 24 | 26 | 23 | 25 | 23 | 24 | 22 | 24 | 22 | 24 | 22 | 23 | 22 | 23 | 21 | 23 | 21 | 23 | 21 | 23 | 21 | 23 |
0.82 | 25 | 27 | 23 | 25 | 22 | 23 | 21 | 22 | 20 | 22 | 20 | 21 | 20 | 21 | 19 | 21 | 19 | 21 | 19 | 21 | 19 | 20 | 19 | 20 | 19 | 20 |
0.84 | 23 | 24 | 20 | 22 | 19 | 21 | 19 | 20 | 18 | 19 | 18 | 19 | 18 | 19 | 17 | 19 | 17 | 18 | 17 | 18 | 17 | 18 | 17 | 18 | 17 | 18 |
0.86 | 20 | 21 | 18 | 19 | 17 | 18 | 16 | 18 | 16 | 17 | 16 | 17 | 16 | 17 | 15 | 17 | 15 | 16 | 15 | 16 | 15 | 16 | 15 | 16 | 15 | 16 |
0.88 | 17 | 19 | 16 | 17 | 15 | 16 | 14 | 16 | 14 | 15 | 14 | 15 | 14 | 15 | 14 | 15 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 | 13 | 14 |
0.90 | 15 | 16 | 14 | 15 | 13 | 14 | 13 | 14 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
0.92 | 13 | 14 | 12 | 13 | 11 | 12 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 | 10 | 11 |
0.94 | 11 | 12 | 10 | 11 | 10 | 10 | 9 | 10 | 9 | 10 | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
0.96 | 9 | 10 | 8 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 | 7 | 8 |
0.98 | 7 | 7 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
Bonett D G (2002) Sample Size Requirements for Testing and Estimating Coefficient Alpha Journal of Educational and Behavioral Statisitcs 27: 335-340
Duhachek A and Iacobucci D (2004) Alpha's Standard Error (ASE): An Accurate and Precise Confidence Interval Estimate. Journal of Applied Psychology Vol. 89, No. 5, 792-808
Johanson GA and Brooks GP (2010) Initial Scale Development: Sample Size for Pilot Studies. Educational and Psychological Measurement Vol.70,Iss.3;p.394-400