p-value returned by non-paraemtric test

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artsci4
artsci4 el 22 de Feb. de 2013
When you perform two-sample test with non-parametric tests such as K-S test and Mann–Whitney U test in MATLAB, is the p-value returned for a one-tailed test or for a two-tailed test?
Thanks.

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Tom Lane
Tom Lane el 22 de Feb. de 2013
Type "help kstest" and you may see (if your MATLAB is recent enough) that there's a 'Type' option to control whether it's one-tailed or two-tailed. But the default is two-tailed.
Same idea for the ranksum function.

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