विधियों की तुलना करें

	वेल्च की टी-परीक्षा (असमान प्रसरण)	स्वतंत्र प्रतिदर्श t-परीक्षण
क्षेत्र	सांख्यिकी	सांख्यिकी
परिवार	Hypothesis test	Hypothesis test
उद्भव वर्ष	1947	1908
प्रवर्तक	B. L. Welch	Student (W. S. Gosset)
प्रकार	Parametric mean comparison (unequal variances)	Parametric mean comparison
मौलिक स्रोत	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.
उपनाम	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
संबंधित	4	4
सारांश	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.