Rodrigo,

Wilcoxon?Mann?Whitney allows arbitrary sample sizes. It is an extension of 
the original Wilcoxon test which only handles equal sample sizes.

________________________________________
Daniel Moreira, MD

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Duke University Medical Center
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Rodrigo Fernandes Ramalho <rofera@ig.com.br> 
Sent by: r-help-bounces@r-project.org
02/14/2009 08:52 AM

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Subject
[R] Mann Whitney test






Hi,

I have a statistical question.

To apply the Mann Whitney test to compare a pair of vectors, they must to
have the same length ?

Thanks,

Rodrigo

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