Compara mètodes

	Test t per a mostres aparellades	Test t per a mostres independents
Camp	Estadística	Estadística
Família	Hypothesis test	Hypothesis test
Any d'origen	1908	1908
Autor original	Student (W. S. Gosset)	Student (W. S. Gosset)
Tipus	Parametric mean comparison (paired)	Parametric mean comparison
Font seminal	Field, A. (2013). Discovering Statistics Using IBM SPSS Statistics (4th ed.). SAGE. ISBN: 978-1446249185	Student (1908). The probable error of a mean. Biometrika, 6(1), 1–25.
Àlies	dependent samples t-test, repeated measures t-test, matched-pairs t-test, eşleştirilmiş örneklem t-testi	student t-test, two-sample t-test, unpaired t-test, bağımsız örneklem t-testi
Relacionats	4	4
Resum	The paired samples t-test is a parametric hypothesis test that compares two measurements taken on the same subjects — such as a before and after reading — to decide whether the average change differs from zero. It rests on the t-distribution introduced by Student (W. S. Gosset) in 1908 and works on the within-subject difference scores rather than the raw measurements.	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.