Hi:

As the help page for wilcox.test() states (?wilcox.test), the test is meant
for one or two groups. Since you have eight groups in your data, the help
page for wilcox.test() suggests using kruskal.test() instead, where the
latter function applies the Kruskal-Wallis test if your intention is to
compare all eight groups simultaneously (analogous to one-way ANOVA). If you
have something else in mind, perhaps you should clarify your intentions.

HTH,
Dennis

On Mon, Aug 16, 2010 at 11:48 PM, Iurie Malai <iurie.malai@gmail.com> wrote:

> Dear R users,
>
> I have a dataset with two variables: $esan - a grouping factor with 8
> levels and $reus. I'd like to do wilcox.test on this dataset as
> sugested Weiwei here:
> https://stat.ethz.ch/pipermail/r-help/2007-July/136627.html. I tried
> to adapt his recommendation but no succes. Can anyone help me?
>
>
> Regards,
>
> Iurie Malai, Senior Lecturer
> Department of Psychology
> Faculty of Psychology and Special Education
> Ion Creanga Moldova Pedagogical State University
>
> ______________________________________________
> 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.
>
>

	[[alternative HTML version deleted]]

