Linganisha mbinu

	Kipimo cha t cha Welch (tathmini zisizo sawa)	T-test kwa Sampuli Huru
Nyanja	Takwimu	Takwimu
Familia	Hypothesis test	Hypothesis test
Mwaka wa asili	1947	1908
Mwanzilishi	B. L. Welch	Student (W. S. Gosset)
Aina	Parametric mean comparison (unequal variances)	Parametric mean comparison
Chanzo asilia	Welch, B. L. (1947). The generalization of Student's problem when several different population variances are involved. Biometrika, 34(1/2), 28–35.	Student (1908). The probable error of a mean. Biometrika, 6(1), 1–25.
Majina mbadala	unequal variances t-test, Welch-Satterthwaite t-test, Welch t-Testi (Eşit Olmayan Varyans)	student t-test, two-sample t-test, unpaired t-test, bağımsız örneklem t-testi
Zinazohusiana	4	4
Muhtasari	Welch's t-test is a parametric hypothesis test that compares the means of two independent groups without assuming their variances are equal. It was introduced by B. L. Welch in 1947 as a more robust generalization of Student's two-sample test for situations where the two groups have different spread.	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.