void wilmannwhitv(double p, int m, int n, int *w0, int *w1);
Returns two critical points of the Wilcoxon-Mann-Whitney Rank Sum Test null distribution function with sample sizes of m and n such that P(W ≤ w0) ≤ p ≤ P(W ≤ w1). w0 and w1 are values from the Wilcoxon from of the test.
Parameters:
p | Cummulative probability. |
---|---|
m | First sample size |
n | Second sample size |
w0 | Lower bound critical point. |
w1 | Upper bound critical point. |
Returns:
On exit, w0 and w1 are set such that P(W ≤ w0 | m, n) ≤ p ≤ P(W ≤ w1 | m, n)
Errors:
NUMERICS_ERROR
is raised if n ≤ 0, m ≤ 0, p ≤ 0, or p ≥ 1
Usage:
int w0, w1;
wilmannwhitv(.5, 10, 15, &w0, &w1)
Header:
#include "rankdist.h"