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Biostatistics analyses biological and health data using statistical approaches. It aids healthcare research on illness prevention, treatment, and public health. Medical and life sciences professionals must know it. Biostatistics MCQ tests are effective. This Biostatistics MCQ blog will address biostatistics MCQs and their right answers. These MCQs can help students, researchers, and healthcare professionals learn this important topic.

## Biostatistics MCQ

1. Which of the following is not a measure of central tendency?
a) Mode
b) Median
c) Variance
d) Mean

2. Which of the following is a measure of variability?
a) Standard error
b) Mode
c) Correlation coefficient
d) Regression coefficient

3. Which of the following tests is used to compare two means?
a) Chi-squared test
b) T-test
c) ANOVA test
d) Mann-Whitney test

4. What is the formula for calculating the sample size required for a study?
a) n = (Zα/2 × σ / d)^2
b) n = Zβ × σ / d
c) n = (Zα/2 × σ / d)^2 × p × (1-p)
d) n = Zα/2 × Zβ × σ / d

5. Which of these measures categorical variable association?
a) Pearson correlation coefficient
b) Spearman’s rank correlation coefficient
c) Odds ratio
d) Coefficient of determination

6. Which of the following measures of association can range from -1 to 1?
a) Correlation coefficient
b) Odds ratio
c) Relative risk
d) Hazard ratio

7. Which of the following is a type of test used to compare more than two means?
a) T-test
b) Chi-squared test
c) ANOVA test
d) Mann-Whitney test

8. Which of the following is an example of a continuous variable?
a) Gender
b) Blood type
c) Height
d) Marital status

9. Which measure of central tendency is most sensitive to extreme values in a data set?
a) Mean
b) Median
c) Mode
d) All of the above

10. Which of the following is an example of a non-parametric test?
a) t-test
b) ANOVA
c) Wilcoxon signed-rank test
d) F-test

11. What is the standard deviation of the following set of values: 2, 4, 6, 8, 10?
a) 2.5
b) 3.0
c) 3.5
d) 4.0

12. Which of the following is an example of a dichotomous variable?
a) Age
b) Income
c) Education level
d) Gender

13. Which of the following is an example of a parametric test?
a) Wilcoxon rank-sum test
b) Mann-Whitney U test
c) t-test
d) Kruskal-Wallis test

14. Which of the following is an example of a discrete variable?
a) Blood pressure
b) Body weight
c) Number of children
d) Height

15. Which of the following is an example of a confounding variable?
a) Age
b) Income
c)Education level
d) Gender

1. c) Variance
2.a) Standard error
3.b) T-test
4.a) n = (Zα/2 × σ / d)^2
5.c) Odds ratio
6.a) Correlation coefficient
7.c) ANOVA test
8.c) Height
9.a) Mean
10.c) Wilcoxon signed-rank test
11.b) 3.0
12.d) Gender
13.c) t-test
14.c) Number of children
15.b) Income