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Kolmogorov-Smirnov (KS) Test
Appropriate for unbinned distributions.
From sorted list of data points, construct estimate SN(x) of the cumulative DF of the probability DF from which it was drawn...
- SN(x) gives fraction of data points to the left of x.
- Constant between xi's, jumps 1/N at each xi.
- Note SN(xmin) = 0, SN(xmax) =1.
- Behavior between xmin & xmax distinguishes distributions.