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Wilcoxon Test Results

 

Hello everyone, 

I am using Wilcoxon Test for comparing the mean differences between two groups. I do understand the meaning of Prob>ChiSq, however would someone please tell if it relevant for one-sided test or two-sided? 

If it is relevant to two-sided test, how can we calculate the probability for one-sided test.

Thank you,

Ne

 

Re: Wilcoxon Test Results

Hi, 

thank you!

 

Re: Wilcoxon Test Results

(Note that this edit corrects and clarifies my original response. A colleague made me reconsider.)

 

The chi square test, like the t test, can be performed as a lower-tailed, upper-tailed, or two-tailed test. The Wilcoxon test is an upper-tailed test.