Asked by Rachel Bormann on Jul 26, 2024
Verified
Which of the following is used to compare the medians from two samples?
A) Mann-Whitney U
B) Wilcoxon rank test
C) Kruskal-Wallis one-way ANOVA
D) the sign test
Medians
The middle value in a data set, which divides the set into two equal halves.
Mann-Whitney U
A nonparametric test used to compare differences between two independent samples.
Wilcoxon Rank Test
A non-parametric statistical test used to compare two related samples to determine if their population means ranks differ.
- Identify different nonparametric tests and understand their roles in analyzing data.
Verified Answer
SP
SheKella PrinceJul 28, 2024
Final Answer :
A
Explanation :
The Mann-Whitney U test, also known as the Wilcoxon rank-sum test or the Mann-Whitney-Wilcoxon test, is used to compare the medians from two independent samples. Option B, the Wilcoxon rank test, is used to compare the medians of two related samples, while option C, the Kruskal-Wallis one-way ANOVA, is used to compare medians from three or more independent samples. Option D, the sign test, is used to compare medians of two related samples when the data is not normally distributed.
Learning Objectives
- Identify different nonparametric tests and understand their roles in analyzing data.
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