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 Related Links: 
Correlation and Regression Explained Page
 
Meta-analysis for Comparing Two Unpaired Groups Explained Page
 
Program
References 
For introduction to Meta-analysis of Correlation Coefficients, and description of the algorithms,
http://www.statisticshell.com/docs/meta.pdf
 For a comparison between the Hunter Schmidt and Hedges Olkin algorithms, 
http://www.statsdirect.com/help/default.htm#meta_analysis/correlation.htm.
 For references to original descriptions of the algorithm
 
- Hunter, J. E., & Schmidt, F. L. (2004). Methods of meta-analysis: Correcting error and bias in research findings (Second edition). Newbury Park, CA: Sage
 - Hedges, L. V., & Olkin, I. (1985). Statistical methods for meta-analysis. Orlando, FL: Academic Press
  
For calculations of Combined Summary Effect Size using Fixed and Random Effect Models :
 
Sutton AJ, Abrams KR, Jones DR, Sheldon TA, and Song F (2000) 
   Methods for Meta-Analysis in Medical Research. John Wiley & Sons Ltd., 
	 Chichester UK. ISBN 0-471-49066-0.p 58-63, p 80-82
 
 
    
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