[R] MANOVA extension of paired t-test?

Prof Brian D Ripley ripley at stats.ox.ac.uk
Thu Jan 24 16:25:45 CET 2002


On Thu, 24 Jan 2002, Stewart Schultz wrote:

> Just a quick followup question: is it true that although manova() performs
> multivariate two-sample t-tests, it currently does not perform multivariate
> one-sample t-tests?

It's not true, indeed false in almost every detail.  manova performs no
tests at all.  summary.manova uses multivariate tests in an ANOVA table,
but they are not t-tests and there is an experimental design, not one or
two samples.

I am at loss as to what you meant!  If you want to test the overall mean
vector in such a design, you can do so by specifying intercept=TRUE in
summary.manova.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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