Recap of Tests in Biotatistics

What non-parametric test

measures the strength and direction of monotonic relationships

• Kruskal-Wallis test

• Mann-Whitney U test

• Spearman's rank correlation

• ANOVA

What parametric test compares the means of two samples (groups) to determine if there is a significant difference?

• Kruskal-Wallis test

• T-test

• Spearman's rank correlation

• ANOVA

What non-parametric test is comparing three or more independent groups?

• Kruskal-Wallis test

• ANOVA

• Pearson correlation

• Mann-Whitney U test

What parametric test is analysing between – group and within – group variation

• Kruskal-Wallis test

• Post-hoc tests

• ANOVA

What non-parametric test is used to compare the medians of two independent groups?

• Wilcoxon signed-rank test

• Mann-Whitney U test

• Chi-square test

• ANOVA

What parametric test is used to compare the means of more than two independent groups?

• Post-hoc test

• ANOVA

• Wilcoxon signed-rank test

A p-value less than _____ is commonly used to determine statistical significance.

What test is used to identify exactly which groups differ from each other.

• Spearman's rank correlation

• Post-hoc test

• Pearson correlation