Compara mètodes

	Correlació de rang Tau de Kendall	Coeficient de correlació de rangs de Spearman
Camp	Estadística	Estadística
Família	Hypothesis test	Hypothesis test
Any d'origen	1938	1904
Autor original	Maurice G. Kendall	Charles Spearman
Tipus	Nonparametric rank correlation	Nonparametric rank-based correlation
Font seminal	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.
Àlies	Kendall tau, Kendall rank correlation, tau-b, tau-c	Spearman's rho, Spearman rank-order correlation, Spearman Sıra Korelasyonu
Relacionats	4	4
Resum	Kendall's tau is a nonparametric measure of the ordinal association between two variables. It quantifies how consistently the relative ordering of one variable matches the ordering of another across all observation pairs, making it robust to outliers and suitable for ordinal or non-normally distributed data.	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.