Meta Analysis Page Logo Meta - Analysis:
Methods of Accumulating Results Across Research Domains
Page 12
Home Contents Abstract Introduction Links Contact Info

Correcting for Sampling Error.

The sample weighted mean correlation is

where Ni is the number of subjects in the study, and ri is the effect size for the individual study. The sample weighted mean correlation is defined by the following variance formula:

The sample weighted mean d and its associated variance are calculated in the same manner.

Previous Home Contents Intro Top Next