What hypotheses do "nonparametric" two-group tests actually test?
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- Roger Newson, 1998. "SOMERSD: Stata module to calculate Kendall's tau-a, Somers' D and median differences," Statistical Software Components S336401, Boston College Department of Economics, revised 06 May 2014.
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Keywordsranksum; Wilcoxon rank-sum test; Mann–Whitney statistic; Hodges–Lehman median shift; effect size; qreg;
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