So sánh phương pháp

	Hệ số tương quan hạng Kendall Tau	Hệ số tương quan hạng Spearman
Lĩnh vực	Thống kê	Thống kê
Họ	Hypothesis test	Hypothesis test
Năm ra đời	1938	1904
Người khởi xướng	Maurice G. Kendall	Charles Spearman
Loại	Rank-based association measure	Nonparametric rank-based correlation
Công trình gốc	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.
Tên gọi khác	Kendall's tau, Kendall tau-b, tau correlation, Kendall Tau Korelasyonu	Spearman's rho, Spearman rank-order correlation, Spearman Sıra Korelasyonu
Liên quan	4	4
Tóm tắt	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.