[R] comparing distributions

Albyn Jones jones at reed.edu
Fri Dec 19 22:19:18 CET 2008

On Fri, Dec 19, 2008 at 05:44:47AM -0800, kdebusk wrote:
> I have data sets from three different sites. None of the data sets are
> normally distributed and can not be log-transformed to a normal
> distribution. I would like to compare the data sets to see if any of
> the sites are similar to each other, and would like something more
> powerful than a non-parametric wilcoxen test. Does anyone have any
> suggestions on more powerful ways of comparing non-normal data sets?
> If it helps, the data sets follow a Gamma distribution. Thanks for all
> input.
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If the data are gamma distributed, then a glm with family Gamma
should be a good option.


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