Non-Parametric Tests Quiz

Which test compares two independent groups?

• Kruskal-Wallis

• Wilcoxon

• Mann-Whitney U

• Friedman

Which data type is suited for nonparametric test?

• Interval

• Ratio

• Ordinal

• Continuous

What tests compares two related samples?

• Chi- square

• Kruskal-Wallis

• Mann-Whitney U

• Wilcoxon Signed-Rank

Which test is best for three or more independent groups?

• Wilconxon

• Kruskal-Wallis

• Friedman

• ANOVA

Which test is used for categorical variables?

• Mann-Whitney U

• Chi-square

• Friedman

• Kruskal-Wallis

Nonparametric Statistics are preferred when:

• Data are normally distributed

• sample size are large

• assumption of parametric test are violated

• you want more statistical power

What is the nonparametric counterpart of the repeated-measures ANOVA?

• Kruskal-Wallis

• Chi-square

• Friedman

• Wilcoxon

Which test is use to compare pre and post-test result?

• Wilcoxon

• Mann-Whitney U

• Kruskal-Wallis

• Chi-square

What test checks for a relationship between gender and preference?

• Wilcoxon

• Kruskal-Wallis

• Friedman

• Chi-square

Which is not true about nonparametric test?

• Robust outliers

• Require normal distribution

• Use ranks instead of means

• Useful for small samples