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gang
July 25, 2016 05:08PM
> I could calculate a single, two-sample t score based on the mean and SD of the distributions of r for the depressed and control groups.

If the total number of voxels within the gray matter is N, the degrees of freedom would be 2*(N-1), but you can approximately treat it as a Z-test.

Gang
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comparing distributions of statistical values between groups: estimating spatial degrees of freedom

paul.hamilton July 25, 2016 11:22AM

Re: comparing distributions of statistical values between groups: estimating spatial degrees of freedom

gang July 25, 2016 05:08PM

Re: comparing distributions of statistical values between groups: estimating spatial degrees of freedom

paul.hamilton July 25, 2016 05:51PM

Re: comparing distributions of statistical values between groups: estimating spatial degrees of freedom

paul.hamilton July 25, 2016 05:51PM

Re: comparing distributions of statistical values between groups: estimating spatial degrees of freedom

gang July 26, 2016 01:53PM