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| Test t robust per campioni indipendenti× | Test t per campioni indipendenti× | |
|---|---|---|
| Campo | Statistica | Statistica |
| Famiglia | Hypothesis test | Hypothesis test |
| Anno di origine≠ | 1974–1990s | 1908 |
| Ideatore≠ | Rand R. Wilcox; Karen K. Yuen (trimmed-mean form) | Student (W. S. Gosset) |
| Tipo≠ | Robust parametric mean comparison | Parametric mean comparison |
| Fonte seminale≠ | Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838 | Student (W. S. Gosset) (1908). The probable error of a mean. Biometrika, 6(1), 1–25. DOI ↗ |
| Alias | Yuen's t-test, trimmed-mean t-test, Winsorized t-test, robust two-sample test | two-sample t-test, unpaired t-test, Student t-test, independent groups t-test |
| Correlati≠ | 2 | 4 |
| Sintesi≠ | The robust independent samples t-test compares the central tendency of two independent groups using trimmed means and Winsorized variances, making it substantially less sensitive to outliers and non-normality than the classical Student or Welch t-test. The most widely used form is Yuen's test, which also accommodates unequal variances across groups. | The independent samples t-test is a parametric hypothesis test that determines whether the means of two independent, unrelated groups differ significantly on a continuous outcome variable. Derived from Gosset's 1908 t-distribution, it is one of the most widely used inferential tests in social, behavioral, biomedical, and experimental sciences. |
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