Re: st: Nemenyi test

[David Hoaglin <dchoaglin@gmail.com>]

Celia,

If you are not approaching your analysis via multiple comparisons, and
you want to compare the shift between the five groups, how do you
define "shift"?  Perhaps equivalently, how do you define the "typical
value" in a group?

Is the behavior of the data within the groups such that it is not
appropriate to use one-way analysis of variance (perhaps after
applying a transformation)?  If you are able to use one-way ANOVA, you
can take advantage of a variety of methods for assessing the
differences among the group means and dealing with the related
multiple comparisons.

David Hoaglin

On Thu, Aug 29, 2013 at 2:22 AM, Célia Dechavanne <celia_dv@yahoo.fr> wrote:
> Thank you for your help.
> My first mail was not enough clear, sorry for that. The five groups are
> small (minimum n=11 and maximum n=26). The KW test gives a significant
> difference between the groups, now I would like to compare 2 by 2. But I
> can't perform pairwise comparison, I would like to compare the shift between
> the five groups. I hope is better clear now.
> Thank you so much for the time spent to answer.
> Best
> Celia

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