Biostatistics - revision

A researcher wants to determine if there is a difference in mean body mass index (BMI) between three groups of patients with different dietary interventions.

• A) ANOVA

• B) Friedman test

• C) Chi-square test

• D) Spearman's rank correlation coefficient

The researcher want to compare the proportions of patients with the disease between the two groups. Which test can be used?

• A) Chi-square test

• B) ANOVA

• C) T-test

• D) pearson correlation

What is the nonparametric alternative to the independent samples t-test?

• Wilcoxon rank-sum test

• Mann-Whitney U test

• Kruskal-Wallis test

• F-test

Which of the following is an example of nominal data in a survey?

• Age

• Income

• Yes/No response

• Number of siblings

What is the range of the correlation coefficient?

• A. 0 to 1

• B. -∞ to ∞

• C. -1 to 1

• D. 0 to ∞