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Suppose you want to estimate the sample size for a multiple correlation analysis. There are five predictors in your study. You choose a power of .8. The literature strongly suggests that with these five predictors, your R-squared value will be .5 What is your best minimal estimate of sample size for the study? NOTE: You may use your notes and the power point from April 24 to answer this question.

A. Approximately 19

B. Approximately 13

C. Approximately 25

D. Approximately 100

Solution Preview

The best estimate of sample size is to use Cohens rules of thumb. Jacob Cohen is considered to be the authority on estimating sample size. In his paper Quantitative Methods in Psychology "A Power Primer" Cohen illustrates in tables the proper sample size ...

Solution Summary

The solution provides explanations on how to estimate a sample size for a multiple correlation analysis. The expert also provides a resource.