Compara mètodes

	Correlació de rang Tau de Kendall	Coeficient de correlació de moment producte de Pearson
Camp	Estadística	Estadística
Família	Hypothesis test	Hypothesis test
Any d'origen	1938	1895
Autor original	Maurice G. Kendall	Karl Pearson
Tipus	Nonparametric rank correlation	Parametric correlation
Font seminal	Kendall, M. G. (1938). A new measure of rank correlation. Biometrika, 30(1/2), 81–93.	Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Lawrence Erlbaum Associates.
Àlies	Kendall tau, Kendall rank correlation, tau-b, tau-c	pearson r, product-moment correlation, bivariate correlation, Pearson Korelasyon Analizi
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 Pearson product-moment correlation coefficient (r) is a parametric measure of the direction and strength of the linear association between two continuous variables. Introduced by Karl Pearson in 1895, it remains the most widely used bivariate correlation statistic in the social, health, and natural sciences. The coefficient ranges from −1 (perfect negative linear relationship) to +1 (perfect positive), with 0 indicating no linear association.