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Data Entry The data is a matrix of numbers with 2 columns - Each row a measurement subject - The 2 columns are the paired measurements in each subject - Measurements are assumed to be normally distributed
Hanneman S K. Design, Analysis and Interpretation of Method-Comparison Studies. AACN Adv Crit Care. 2008 Apr-Jun; 19(2): 223-234. [ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2944826/]
Altman DG, Bland JM (1983). "Measurement in medicine: the analysis of method comparison studies". The Statistician. 32 (3): 307-317. doi:10.2307/2987937. JSTOR 2987937. [https://www-users.york.ac.uk/~mb55/meas/ba.pdf]
[Wikipedia for Bland Altman Plot]