[R] multiple numerical variables in aov
Chuck Cleland
ccleland at optonline.net
Fri Apr 11 16:17:58 CEST 2003
Rishabh Gupta wrote:
> Like I said I was using aov() instead of anova(). I want to maintain maximum compatability with
> what I've been using so far and I notice that manova() is just a wrapper to aov(). How important
> is it to use summary(......, test="Wilks") exactly, do you think that the default test statistic
> would be sufficient.
Rishabh:
The default multivariate test would be based on Pillai's
trace. That may meet your needs. Also, note how the following
differ:
summary(manova(cbind(v1, v2, v3) ~ g, data = mydata))
vs.
summary(aov(cbind(v1, v2, v3) ~ g, data = mydata))
So if I understood your initial request, I think you want
summary(manova()) and not summary(aov()).
hope it helps,
Chuck Cleland
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