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RE: st: Non-normal alternative to MANOVA
From
"Lachenbruch, Peter" <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
RE: st: Non-normal alternative to MANOVA
Date
Fri, 2 Jul 2010 09:19:17 -0700
There is an old paper from the 1970s by Maronna (I think in the Annals of Statistics) that showed the breakdown for MANOVA was pretty poor, so I'd be cautious about assuming robustness.
Tony
Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Kay Walker
Sent: Friday, July 02, 2010 7:31 AM
To: [email protected]
Subject: Re: st: Non-normal alternative to MANOVA
MANOVA is very robust, so I would do it anyway, explain the caveats on
any conclusions and present some nonparametric tests on each variable
with the ones you want to use as control variables. A signed rank test
might be OK. Or some Mann-Whitneys. I can't figure out how you could
incorporate all your variables into one nonparametric test.
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