afni.nimh.nih.gov

> Would like to confirm with you if the 3dMannWhitney uses dset2-dset1 instead of dset1-dset2.

This is unfortunately is not mentioned in the help, but in the manual:

[homepage.usask.ca]

In the output of 3dMannWhitney, the first sub-brick (#0) shows the median of dset2-dset1.

Gang