Dear all; working with a 'fat' data set (700 variables / 50 samples) and trying to run a manova test on it (I'm aware that it's not the best option for this kind of data set) I got the error in the summary.manova function about the rank of the residuals (rank < # variables). Ok. The thing that I don't understand is why I don't get the same type of error in SAS. There seems to be no problem with rank deficiency and the fit-statistics in SAS (no negative DF or something like that...). I'm sure it must be some differences in the way the manova test is calculated but I don't know what they are, so I'll appreciate any comments... Thanks PM
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