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	Parat t-test	Enkel t-test
Ämnesområde	Statistik	Statistik
Familj	Hypothesis test	Hypothesis test
Ursprungsår	1908	1908
Upphovsperson	Student (W. S. Gosset)	Student (W. S. Gosset)
Typ	Parametric mean comparison	Parametric mean comparison
Ursprungskälla	Student (1908). The probable error of a mean. Biometrika, 6(1), 1–25.	Student (1908). The probable error of a mean. Biometrika, 6(1), 1–25.
Alias	dependent t-test, matched pairs t-test, repeated measures t-test, within-subjects t-test	single-sample t-test, one-group t-test, one-sample t, Student one-sample t-test
Närliggande	3	3
Sammanfattning	The paired samples t-test is a parametric hypothesis test that compares the means of two related measurements from the same subjects or matched pairs to determine whether the average difference is significantly different from zero. It leverages the dependency between observations to produce a more powerful test than its independent-samples counterpart.	The one-sample t-test is a parametric hypothesis test that determines whether the mean of a single sample differs significantly from a known or hypothesized population value. Derived from Student's (Gosset's) 1908 t-distribution, it assumes continuous, approximately normally distributed data and is one of the most fundamental tests in applied statistics.