Asked by Jackie Rojas on Jun 30, 2024
Verified
Which of the following correctly describes the Wilcoxon rank-sum test?
A) It is a nonparametric test based on two independent simple random samples.
B) It is designed to determine whether the relative frequency distributions of two statistical populations of continuous values are identical to or different from one another.
C) The Wilcoxon rank-sum test is equivalent to a parametric t-test of the difference between two independent means.
D) All of these.
E) None of these
Wilcoxon Rank-sum Test
A statistical test that doesn't rely on parameters and is utilized to evaluate whether two separate samples have different population mean ranks.
Independent Samples
Two or more groups of samples that are collected from distinct populations and are not related or matched in any way.
Relative Frequency Distributions
A statistical tool detailing the proportion of times each value appears in a dataset relative to the total number of observations.
- Comprehend the use and prerequisites of the Wilcoxon rank-sum test.
Verified Answer
BT
Brandon TineoJul 03, 2024
Final Answer :
D
Explanation :
The Wilcoxon rank-sum test is a nonparametric test that compares two independent samples to determine if they come from the same distribution, making it an alternative to the parametric t-test when the data do not meet the assumptions required for the t-test. It assesses whether the relative frequency distributions of two populations are identical or different, making all the given options correct descriptions of the test.
Learning Objectives
- Comprehend the use and prerequisites of the Wilcoxon rank-sum test.