符号秩检验
wilcoxon matched pairs signed rank test
威氏配对符号秩次检验
wilcoxon's rank sum test for unpaired observations and wilcoxon signed rank test for paired treatments are used to test the hypothesis that two populations have no difference for location.
Wilcoxon秩和检验和符号秩和检验常用于总体中心位置的假设检验。
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