Comparar métodos
Examine os métodos selecionados lado a lado; as linhas que diferem ficam destacadas.
| ANOVA unidirecional robusta× | Teste t robusto para amostras independentes× | |
|---|---|---|
| Área | Estatística | Estatística |
| Família | Hypothesis test | Hypothesis test |
| Ano de origem≠ | 1951 (Welch); 1990s–2000s (trimmed-mean variants) | 1974–1990s |
| Autor original≠ | B. L. Welch; R. R. Wilcox (trimmed-mean extension) | Rand R. Wilcox; Karen K. Yuen (trimmed-mean form) |
| Tipo≠ | Robust parametric group comparison | Robust parametric mean comparison |
| Fonte seminal | Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838 | Wilcox, R. R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Academic Press. ISBN: 978-0123869838 |
| Outros nomes | trimmed-mean ANOVA, Welch one-way ANOVA, heteroscedastic one-way ANOVA, robust ANOVA | Yuen's t-test, trimmed-mean t-test, Winsorized t-test, robust two-sample test |
| Relacionados | 2 | 2 |
| Resumo≠ | Robust one-way ANOVA compares the central tendency of three or more independent groups while resisting the distorting effects of outliers and heterogeneous variances. By replacing ordinary means with trimmed means and ordinary variances with Winsorized variances, it maintains accurate Type I error control and strong power when classical ANOVA assumptions are violated. | 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. |
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