Re: [R] Wilcoxon test and grouping factor with multiple levels

2010-08-17 Thread Iurie Malai
Thank you, David Winsemius and Dennis Murphy! I want to compare pairs one by one. 2010/8/17 Iurie Malai : > 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://

Re: [R] Wilcoxon test and grouping factor with multiple levels

2010-08-17 Thread Dennis Murphy
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

Re: [R] Wilcoxon test and grouping factor with multiple levels

2010-08-17 Thread David Winsemius
On Aug 17, 2010, at 2:48 AM, Iurie Malai 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 adap

[R] Wilcoxon test and grouping factor with multiple levels

2010-08-16 Thread Iurie Malai
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