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.
comparing distributions
2 messages · kdebusk, Albyn Jones
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. albyn