השוואת שיטות

	מבחן t למדגמים בלתי תלויים	מבחן Mann-Whitney U
תחום	סטטיסטיקה	סטטיסטיקה
משפחה	Hypothesis test	Hypothesis test
שנת המקור	1908	1947
הוגה השיטה	Student (W. S. Gosset)	H. B. Mann & D. R. Whitney
סוג	Parametric mean comparison	Nonparametric two-group comparison
מקור מכונן	Student (1908). The probable error of a mean. Biometrika, 6(1), 1–25.	Mann, H. B. & Whitney, D. R. (1947). On a test of whether one of two random variables is stochastically larger than the other. Annals of Mathematical Statistics, 18(1), 50–60.
כינויים	student t-test, two-sample t-test, unpaired t-test, bağımsız örneklem t-testi	Mann-Whitney-Wilcoxon test, Wilcoxon rank-sum test, Mann-Whitney U Testi
קשורות	4	4
תקציר	The independent samples t-test is a parametric hypothesis test that compares the means of two independent groups to decide whether they differ significantly. It builds on the t-distribution introduced by Student (W. S. Gosset) in 1908 and assumes the measured values are continuous, approximately normally distributed, and have equal variances.	The Mann-Whitney U test is the nonparametric alternative to the independent samples t-test, comparing two independent groups by ranking all observations together rather than relying on their means. It was introduced by H. B. Mann and D. R. Whitney in 1947 and does not require the data to be normally distributed.