Re: [R] Games-Howell, Gabriel, Hochberg

From: Peter Dalgaard <p.dalgaard_at_biostat.ku.dk>
Date: Thu 01 Dec 2005 - 02:55:13 EST

Gabor Grothendieck <ggrothendieck@gmail.com> writes:

> What would be nice would be an R routine that automatically
> implements this flowchart.

I'd recommend learning about p.adjust and the multcomp package *instead* of following the flowchart. (Ignoring heteroscedasticity seems a bit silly too, given the availability of oneway.test(), and I'm not too happy about mechanistic dependency upon tests for normality either.)  

> On 11/30/05, Claus Atzenbeck <claus.atzenbeck@freenet.de> wrote:
> > On Tue, 29 Nov 2005, Claus Atzenbeck wrote:
> >
> > > How do you calculate post hoc multiple comparisons tests with R for
> > > normal distributed samples with different variances?
> >
> > In order to make it more visible, I have created an overview that shows
> > my decision about what test I use. It is available at
> > <http://cs.aaue.dk/~claus/temp/TestOverview.pdf>. What can I change that
> > I still can use R to perform my test? (At the very bottom of the
> > overview you see note about the missing tests in R.)
> >
> > Thanks for any comment.
> > Claus
> >
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>
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-- 
   O__  ---- Peter Dalgaard             ุster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)                  FAX: (+45) 35327907

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Received on Thu Dec 01 03:46:28 2005

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