方法对比

	Kendall Tau 秩相关	Spearman秩相关系数
领域	统计学	统计学
方法族	Hypothesis test	Hypothesis test
起源年份	1938	1904
提出者	Maurice G. Kendall	Charles Spearman
类型	Rank-based association measure	Nonparametric rank-based correlation
开创性文献	Kendall, M. G. (1938). A new measure of rank correlation. Biometrika, 30(1–2), 81–93.	Spearman, C. (1904). The proof and measurement of association between two things. The American Journal of Psychology, 15, 72–101.
别名	Kendall's tau, Kendall tau-b, tau correlation, Kendall Tau Korelasyonu	Spearman's rho, Spearman rank-order correlation, Spearman Sıra Korelasyonu
相关	4	4
摘要	Kendall Tau is a nonparametric rank correlation coefficient introduced by Maurice G. Kendall in 1938 to measure the strength and direction of a monotone association between two ordinal or continuous variables. It is particularly suited to small samples and datasets containing many tied ranks, where the Spearman coefficient can be less stable.	The Spearman rank correlation coefficient (ρ) is a nonparametric measure of the monotonic association between two variables. Introduced by Charles Spearman in 1904, it converts raw observations to ranks and measures how consistently one variable increases as the other increases, without assuming a normal distribution or a linear relationship.