Using ranksum function

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joseph Frank
joseph Frank 2011-5-14
I have a distribution which is not normal and i want to use wilcoxon rank test to test if the median is =0;if the observations are in vector X can i run the test this way: [p,h]=ranksum(X,0)

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回答（2 个）

Oleg Komarov
Oleg Komarov 2011-5-14
Use signrank:
p = signrank(x) performs a two-sided signed rank test of the null hypothesis that data in the vector x comes from a continuous, symmetric distribution with zero median, against the alternative that the distribution does not have zero median. The p value of the test is returned in p.
bym
bym 2011-5-14
yes
doc ranksum
will confirm that the input arguments need not be equal

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