Posted by
torvon on
Nov 12, 2012; 8:43pm
URL: http://spssx-discussion.165.s1.nabble.com/Multivariate-comparison-Hotelling-s-T-tp5716159.html
Hello.
I have the following two problems, and I think I might need Hotelling's T test for that.
(1) I want to test whether my 9 dependent variables (9 symptoms) are equally high or not (equally
high = Null Hypothesis). I can run a couple of t-tests to compare them, but would like to do this in
one step. Is Hotelling's T the correct test for this? I googled for Hotelling's T, but the results are very
different from each other, and although Hotelling's T pops up under various options, I have not found
any way to test against the Null Hypothesis of equal severity.
The dependent variables are ordinal (0,1,2,3) and pretty skewed, but I guess I could treat them as
metric for this.
(2) I want to compare 9 dependent variables at time 1 to the same variables at time 2. I want to know
whether the profile of severity changes or not. How would I do this? Also Hotelling's T? If so, what
option exactly? Again google wasn't helpful, people say "MANOVA" or "SCALE", and yes, I do find an
output option, but nowhere does SPSS allow me to put down 2 measurement points.
Thank you!
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