Hedges' g For Paired T-test

1. May 3, 2013

Soaring Crane

Can Hedges' g (effect size) for a paired t-test be greater than 1 if the following is the formula for g?

g = (mean_1 - mean_2)/(average standard deviation of the two variables)

Thank you.

2. May 3, 2013

Stephen Tashi

You should define what you mean by "average standard deviation of the two variables". (And you shouldn't say ithe things involved are parameters of "the variables" if you actually mean the things involved are quantities calculated from a sample.)

3. May 3, 2013

Soaring Crane

If you have a data set comprised of test scores before studying (G1) and a data set comprised of test scores after studying (G2),