[R] Kruskal-Wallace power calculations.

Jim Lemon drjimlemon at gmail.com
Fri Apr 3 00:35:30 CEST 2015


Hi Collin,
Have a look at this:

http://stats.stackexchange.com/questions/70643/power-analysis-for-kruskal-wallis-or-mann-whitney-u-test-using-r

Although, thinking about it, this might have constituted your "perusal of
the literature".

Plus it always looks better when you spell the names properly

Jim


On Fri, Apr 3, 2015 at 2:23 AM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:

> Please stop... you are acting like a broken record, and are also posting
> in HTML format. Please read the Posting Guide and demonstrate that you have
> used a search engine on this topic before posting again.
> ---------------------------------------------------------------------------
> Jeff Newmiller                        The     .....       .....  Go Live...
> DCN:<jdnewmil at dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live
> Go...
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> Sent from my phone. Please excuse my brevity.
>
> On April 2, 2015 7:25:20 AM PDT, Collin Lynch <cflynch at ncsu.edu> wrote:
> >Greetings, I am working on a project where we are applying the
> >Kruskal-Wallace test to some factor data to evaluate their correlation
> >with
> >existing grade data.  I know that the grade data is nonnormal therefore
> >we
> >cannot rely on ANOVA or a similar parametric test.  What I would like
> >to
> >find is a mechanism for making power calculations for the KW test given
> >the
> >nonparametric assumptions.  My perusal of the literature has suggested
> >that
> >a simulation would be the best method.
> >
> >Can anyone point me to good examples of such simulations for KW in R?
> >And
> >does anyone have a favourite package for generating simulated data or
> >conducting such tests?
> >
> >    Thank you,
> >    Collin.
> >
> >       [[alternative HTML version deleted]]
> >
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