R help - May 2010 - anova post hoc tests

Hi everybody

does anyone know how I can run ANOVA post-hoc tests using R commander or R in
general?

Thank you


Dr. Iasonas Lamprianou

See :
http://www.statmethods.net/stats/anova.html
?TukeyHSD

Cheers
Joris

On Fri, May 28, 2010 at 2:11 PM, Iasonas Lamprianou
<lamprianou@yahoo.com>wrote:
> Hi everybody
>
> does anyone know how I can run ANOVA post-hoc tests using R commander or R
> in general?
>
> Thank you
>
>
> Dr. Iasonas Lamprianou
>
>
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Joris Meys
Statistical Consultant

Ghent University
Faculty of Bioscience Engineering
Department of Applied mathematics, biometrics and process control

Coupure Links 653
B-9000 Gent

tel : +32 9 264 59 87
Joris.Meys@Ugent.be
-------------------------------
Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php

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Download and install

install.packages("RcmdrPlugin.HH")
library(RcmdrPlugin.HH)


Then there are two options.

The Rcmdr menu item
Statistics > Means > One-way ANOVA...
has a checkbox for pairwise comparison of means"
It uses glht in the multcomp package.

The second option, which I prefer, is to use the MMC (Mean-mean Multiple
Comparisons) plot.  I describe the one-way ANOVA use here. See the help
file for higher-order designs and user-specified contrasts.

After running the One-way ANOVA above,
click the Rcmdr menu item
Models > Graphs > MMC plot... (HH)
Select the model and click OK.

If the means of the groups are close together, you might need to check
the box for the tiebreaker plot.  You will need to record graph history if
you
need the teibreaker plot as it appears on a second page.


Rich




On Fri, May 28, 2010 at 8:11 AM, Iasonas Lamprianou
<lamprianou@yahoo.com>wrote:
> Hi everybody
>
> does anyone know how I can run ANOVA post-hoc tests using R commander or R
> in general?
>
> Thank you
>
>
> Dr. Iasonas Lamprianou
>
>
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
>
http://www.R-project.org/posting-guide.html<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>
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