Asked by riley rajewski on Jun 23, 2024
Verified
The Kruskal-Wallis test statistic can be approximated by a chi-squared distribution with k - 1 degrees of freedom (where k is the number of populations) whenever the sample sizes are all greater than or equal to:
A) 5
B) 15
C) 25
D) 30
E) 45
Chi-Squared Distribution
A statistical distribution employed in hypothesis testing that is known for its utility in evaluating the goodness-of-fit between observed and expected data.
Sample Sizes
Refers to the number of observations or elements chosen from a population to form a sample for a statistical study.
Kruskal-Wallis Test
A non-parametric test used to determine if there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.
- Apply the Kruskal-Wallis test to assess differences across various groups.
- Understand the relationship between sample size and the appropriateness of nonparametric test approximations.
Verified Answer
Learning Objectives
- Apply the Kruskal-Wallis test to assess differences across various groups.
- Understand the relationship between sample size and the appropriateness of nonparametric test approximations.
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