Compara mètodes

	Test U de Mann-Whitney robust	Test t robust per a mostres independents
Camp	Estadística	Estadística
Família	Hypothesis test	Hypothesis test
Any d'origen	1947 / 2003	1974–1990s
Autor original	Rand Wilcox (robust extensions); original test by Mann & Whitney (1947)	Rand R. Wilcox; Karen K. Yuen (trimmed-mean form)
Tipus	Robust nonparametric two-group comparison	Robust parametric mean comparison
Font seminal	Wilcox, R. R. (2005). Introduction to Robust Estimation and Hypothesis Testing (2nd ed.). Academic Press. ISBN: 978-0127515427	Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838
Àlies	robust Wilcoxon rank-sum test, robust two-sample rank test, outlier-resistant Mann-Whitney test, robust nonparametric two-group comparison	Yuen's t-test, trimmed-mean t-test, Winsorized t-test, robust two-sample test
Relacionats	1	2
Resum	The Robust Mann-Whitney U test is a nonparametric two-group comparison that combines the rank-based logic of the classic Mann-Whitney U test with modern robust techniques — such as outlier screening, trimmed means, or robust variance estimation — to produce reliable inferences when data contain extreme values, heavy-tailed distributions, or other violations that compromise the standard test.	The robust independent samples t-test compares the central tendency of two independent groups using trimmed means and Winsorized variances, making it substantially less sensitive to outliers and non-normality than the classical Student or Welch t-test. The most widely used form is Yuen's test, which also accommodates unequal variances across groups.