It depends on a couple of things. If you don't have any continuous
covariates, then the difference will be in the computation of the noise
and the DOF. With all groups, you'll be computing the noise variance
across all subjects, and you'll have a much higher DOF. The size of the
difference betw
Hi -
Thanks for your help.
I have 3 groups and am trying to run an ANOVA and series of t-tests.
First, I ran mri_glmfit with two rows in my .mat file (1 -1 0, 1 0 -1)
for the ANOVA. Then, before I ran into this webpage
https://surfer.nmr.mgh.harvard.edu/fswiki/FsgdExamples, to do a follow
up