Suppose that you wish to perform a nonparametric test for a difference among the medians of three or more independent populations.

Question

Suppose that you wish to perform a nonparametric test for a difference among the medians of three or more independent populations. which of these tests would be appropriate?

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Adela 2 weeks 2022-12-24T22:03:21+00:00 1 Answer 0 views 0

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    2022-12-24T22:04:53+00:00
    The test which would be appropriate to perform a nonparametric test for a difference among the medians of three or more independent populations is: b. Kruskal-Wallis test.

    What is Kruskal-Wallis test?

    The Kruskal-Wallis test is also referred to as one-way ANOVA on ranks or Kruskal-Wallis H test and it can be defined as a rank-based nonparametric test that is typically used to determine whether or not there are statistically significant differences between two (2) or more samples of an independent variable on either a continuous or ordinal dependent variable.
    This ultimately implies that, a Kruskal-Wallis test can be used to determine whether two (2) or more samples originate from the same distribution.
    In Statistics, the null and alternative hypotheses for the Kruskal-Wallis test are generally given by:
    • H₀: the medians are all the equal.
    • H₁: at least one median is not the same.
    Read more on Kruskal-Wallis test here: https://brainly.com/question/13992725
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    Complete Question:
    Suppose you wish to perform a nonparametric test for a difference among the medians of three or more independent populations. Which of these tests would be appropriate?
    a. ANOVA
    b. Kruskal-Wallis test
    c. Wilcoxon signed-rank for matched pairs
    d. Wilcoxon signed-rank for two independent samples

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