Compară metode
Examinează metodele selectate una lângă alta; rândurile care diferă sunt evidențiate.
| Testul Shapiro-Wilk pentru Normalitate× | Testul t pentru eșantioane independente× | |
|---|---|---|
| Domeniu | Statistică | Statistică |
| Familie | Hypothesis test | Hypothesis test |
| Anul apariției≠ | 1965 | 1908 |
| Autorul original≠ | S. S. Shapiro & M. B. Wilk | Student (W. S. Gosset) |
| Tip≠ | Normality (goodness-of-fit) test | Parametric mean comparison |
| Sursa seminală≠ | Shapiro, S. S. & Wilk, M. B. (1965). An analysis of variance test for normality (complete samples). Biometrika, 52(3-4), 591–611. DOI ↗ | Student (1908). The probable error of a mean. Biometrika, 6(1), 1–25. DOI ↗ |
| Denumiri alternative≠ | Shapiro-Wilk W test, W test for normality, Shapiro-Wilk normallik testi | student t-test, two-sample t-test, unpaired t-test, bağımsız örneklem t-testi |
| Înrudite≠ | 2 | 4 |
| Rezumat≠ | The Shapiro-Wilk test is a hypothesis test that checks whether a continuous variable was drawn from a normal distribution. It was introduced by Samuel Shapiro and Martin Wilk in 1965 and is regarded as one of the most powerful normality tests, recommended for sample sizes below 5000. | 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. |
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