Stats
Hedge's G (May 13, 2005) Category: Systematic
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Someone asked me today about Hedge's G. I had never heard of it before, but if you do a
web search, you will find
which defines it as a variation on Cohen's D that corrects for biases due to small sample
sizes. The formula for Cohen's D is well known:

and you adjust this value to get Hedge's G with the formula:

07/08/2008.