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strengejacke / esc

Effect Size Computation for Meta Analysis
https://strengejacke.github.io/esc
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incorrect SD for converting unstandardized b to d #10

Open strengejacke opened 2 years ago

strengejacke commented 2 years ago

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I noticed in the esc package that the formula for converting unstandardized b to d is incorrect as it utilizes the total sample variance/SD rather than the pooled SD. I see the on-line calculator has the same error, but that the source document from Wilson is correct: https://mason.gmu.edu/~dwilsonb/downloads/esformulas.pdf