Score for this attempt: 12 out of 12.5
Question 1
0..5 pts
What is the Kruskal-Wallis test based upon?
Correct!
Ranks
Means
Residuals
Intervals
Question 2
0..5 pts
What is the parametric equivalent of the Wilcoxon signed-rank test?
Independent ANOVA
Correct!
The paired samples t-test
The independent t-test
Pearson's r correlation
Question 3
, 0..5 pts
What is the problem with doing multiple pairwise comparisons to follow up a significant
Kruskal-Wallis test?
It decreases the significance of the Kruskal-Wallis test.
It potentially masks important differences between variables.
Correct!
It inflates the familywise error rate.
None of these
Question 4
0..5 pts
What is the non-parametric equivalent of the independent t-test?
Wilcoxon signed-rank test
Spearman's rho
Friedman's ANOVA
Correct!
Mann-Whitney test
Question 5
0..5 pts
Non-parametric tests are used when:
Question 1
0..5 pts
What is the Kruskal-Wallis test based upon?
Correct!
Ranks
Means
Residuals
Intervals
Question 2
0..5 pts
What is the parametric equivalent of the Wilcoxon signed-rank test?
Independent ANOVA
Correct!
The paired samples t-test
The independent t-test
Pearson's r correlation
Question 3
, 0..5 pts
What is the problem with doing multiple pairwise comparisons to follow up a significant
Kruskal-Wallis test?
It decreases the significance of the Kruskal-Wallis test.
It potentially masks important differences between variables.
Correct!
It inflates the familywise error rate.
None of these
Question 4
0..5 pts
What is the non-parametric equivalent of the independent t-test?
Wilcoxon signed-rank test
Spearman's rho
Friedman's ANOVA
Correct!
Mann-Whitney test
Question 5
0..5 pts
Non-parametric tests are used when:
