Posted by Liz Roy on November 20, 2002 at 12:02:00:

This is the first time we have tried to use 3dANOVA to analyze data across subjects, and apparently I've done something wrong... I have calculated area under the curve (sing 3dDeconvolve to estimate hrf's) for each of 3 levels of factor A, for each of 4 levels of factor B, for 8 subjects (factor C). When I tried to run 3dANOVA3, I was told that my sample size was too small to calculate F(C). Can someone tell me where I've gone wrong, and what I might do about it?

Thanks in advance.