DMME_5083 _CH 7

1. Which assumption is critical for parametric tests but not required for non-parametric tests?

• A) Ordinal data

• B) Normality of data distribution

• C) Independence of observations

• D) Random sampling

2. When should you use a non-parametric test?

• A) Data follows a normal distribution

• B) Sample size is large

• C) Data is ordinal or violates parametric assumptions

• D) Comparing means of two groups

3. The Chi-Square test is most appropriate for analyzing:

• A) Differences between means of two groups

• B) Variance in normally distributed data

• C) Correlations between continuous variables

• D) Relationships between categorical variables

4. Which assumption is required for the Chi-Square test?

• A) Homogeneity of variance

• B) Expected frequencies ≥ 5 in most cells

• C) Data must be normally distributed

• D) Equal sample sizes

5. The Mann-Whitney U test is used to compare

• A) Means of two paired groups

• B) Proportions of three or more groups

• C) Medians of two independent groups

• D) Variances of two dependent groups

6. The Kruskal-Wallis test is the non-parametric alternative to which parametric test?

• A) Independent t-test

• B) Paired t-test

• C) One-way ANOVA

• D) Repeated measures ANOVA

7. The Wilcoxon Signed-Rank Test is suitable for:

• A) Comparing two independent groups

• B) Analyzing paired/matched observations

• C) Testing correlations between variables

• D) Assessing categorical data

8. The Friedman Test is used to compare

• A) Three or more independent groups

• B) Proportions in a contingency table

• C) Two groups with normal distributions

• D) Three or more related groups (repeated measures)

9. Which test is the non-parametric alternative to the paired t-test?

• A) Mann-Whitney U test

• B) Kruskal-Wallis test

• C) Wilcoxon Signed-Rank test

• D) Chi-Square test

10. What distinguishes the Friedman Test from the Kruskal-Wallis Test?

• A) Friedman uses ranks for independent groups; Kruskal-Wallis for related groups

• B) Friedman uses ranks for related groups; Kruskal-Wallis for independent groups

• C) Kruskal-Wallis requires normality

• D) Friedman compares medians of two groups