Statıstıcs Iı Deneme Sınavı Sorusu #976336

Which test is used to decide whether k independent samples are drawn from different populations?


The Sign Test

Kruskal-Wallis Test

The Wilcoxon Rank Sum Test

The Wilcoxon Signed Rank Test

Spearman Rank Correlation Coefficient


Yanıt Açıklaması:

The one-way analysis of variance has some assumptions such as independent samples, normality, and equal variances. When the conditions of normality and equal variances are not valid, Kruskal-Wallis is a non-parametric alternative test that involves less conditions. The Kruskal-Wallis test is used to decide whether k independent samples are drawn from different populations. It is an extension of the Wilcoxon sum rank test to a comparison of more than two populations. The Kruskal-Wallis test assumes that the variable under consideration is measured on at least ordinal scale. The correct answer is B.

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