P-value using ranksum function

D = xlsread('Matlab A1.xls');
Dmin = min(D)
Dmax = max(D)
Dinf = D(~isfinite(D))
Dmin =
     0     0     0     0     0     0
Dmax =
     0     0     0     0     0     0
Dinf =
  0×1 empty double column vector

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Matlab 2017-7-24

What do you mean that is a problem in ranksum ? And how can I solve this problem? All values equal to zero so p value must be 1.

Star Strider 2017-7-24

Please read the documentation on the ranksum function, and consult a statistics textbook on the Wilcoxon rank sum test.

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P-value using ranksum function

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