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