Re: [R] ANCOVA & Post-hoc test

From: Spencer Graves <spencer.graves_at_pdf.com>
Date: Mon 19 Dec 2005 - 03:53:37 EST

          What search terms did you use? Have you considered the "multcomp" and "multtest" packages?

          spencer graves
p.s. If you'd like more help from this list, I suggest you read the posting guide! "www.R-project.org/posting-guide.html". Anecdotal evidence suggests that posts more closely aligned with this guide tend to get quicker, more useful replies.

Nicolas Poulet wrote:

> Hello,
>
> Despite my search, I didn't find a post-hoc test for an ANCOVA.
>
> I used the functions aov() and lm() to run the ANCOVA then I tried
> TukeyHSD() but it didn't work (because of the covariable is a continuous
> variable?).
>
> Furthermore, I would like to plot the adjusted values (i.e. the values of
> the tested variable taking into account the covariable).
>
> Thanks for your help!
>
> N. Poulet
>
>
> [[alternative HTML version deleted]]
>
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Received on Mon Dec 19 04:04:00 2005

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