sandbox.stats.runs.median_test_ksample()

statsmodels.sandbox.stats.runs.median_test_ksample

statsmodels.sandbox.stats.runs.median_test_ksample(x, groups) [source]

chisquare test for equality of median/location

This tests whether all groups have the same fraction of observations above the median.

Parameters:	x : array_like data values stacked for all groups groups : array_like group labels or indicator
Returns:	stat : float test statistic pvalue : float pvalue from the chisquare distribution others ???? currently some test output, table and expected