HLT 362V
Applied Statistics
Final Exam Review (Qns & Ans)
2025
1. What is the purpose of using confidence intervals in health
care research?
- A. To estimate the population parameter
- B. To determine the sample size
- C. To measure the central tendency
- D. To assess the variability of the data
- ANS: A. To estimate the population parameter
©2025
, - Rationale: Confidence intervals provide a range of values
within which the population parameter is likely to fall, offering an
estimate of the parameter.
2. Which statistical test is appropriate for comparing the means
of two independent groups?
- A. Chi-square test
- B. ANOVA
- C. Paired t-test
- D. Independent t-test
- ANS: D. Independent t-test
- Rationale: The independent t-test is used to compare the
means of two independent groups to determine if there is a
statistically significant difference between them.
Fill-in-the-Blank Questions
3. _________ is a measure of the strength and direction of the
relationship between two variables.
- ANS: Correlation
- Rationale: Correlation measures the strength and direction
of the relationship between two variables, indicating how they
move together.
©2025
,4. The ___________ test is used to analyze the association
between categorical variables.
- ANS: Chi-square
- Rationale: The chi-square test is used to determine if there
is a significant association between categorical variables.
True/False Questions
5. True or False: A p-value less than 0.05 indicates a statistically
significant result.
- ANS: True
- Rationale: A p-value less than 0.05 is commonly considered
statistically significant, indicating that the observed result is
unlikely to have occurred by chance.
6. True or False: Regression analysis is used to predict the value
of one variable based on the value of another variable.
- ANS: True
- Rationale: Regression analysis is used to predict the value
of a dependent variable based on the value of one or more
independent variables.
©2025
, Multiple Response Questions
7. Which of the following are measures of central tendency?
(Select all that apply)
- A. Mean
- B. Median
- C. Mode
- D. Range
- ANS: A. Mean, B. Median, C. Mode
- Rationale: Measures of central tendency include the mean,
median, and mode. The range is a measure of variability.
8. What are the assumptions of the independent t-test? (Select all
that apply)
- A. The data are normally distributed
- B. The samples are dependent
- C. The variances of the two groups are equal
- D. The data are measured on an ordinal scale
- ANS: A. The data are normally distributed, C. The
variances of the two groups are equal
- Rationale: The independent t-test assumes that the data are
normally distributed and that the variances of the two groups are
©2025
Applied Statistics
Final Exam Review (Qns & Ans)
2025
1. What is the purpose of using confidence intervals in health
care research?
- A. To estimate the population parameter
- B. To determine the sample size
- C. To measure the central tendency
- D. To assess the variability of the data
- ANS: A. To estimate the population parameter
©2025
, - Rationale: Confidence intervals provide a range of values
within which the population parameter is likely to fall, offering an
estimate of the parameter.
2. Which statistical test is appropriate for comparing the means
of two independent groups?
- A. Chi-square test
- B. ANOVA
- C. Paired t-test
- D. Independent t-test
- ANS: D. Independent t-test
- Rationale: The independent t-test is used to compare the
means of two independent groups to determine if there is a
statistically significant difference between them.
Fill-in-the-Blank Questions
3. _________ is a measure of the strength and direction of the
relationship between two variables.
- ANS: Correlation
- Rationale: Correlation measures the strength and direction
of the relationship between two variables, indicating how they
move together.
©2025
,4. The ___________ test is used to analyze the association
between categorical variables.
- ANS: Chi-square
- Rationale: The chi-square test is used to determine if there
is a significant association between categorical variables.
True/False Questions
5. True or False: A p-value less than 0.05 indicates a statistically
significant result.
- ANS: True
- Rationale: A p-value less than 0.05 is commonly considered
statistically significant, indicating that the observed result is
unlikely to have occurred by chance.
6. True or False: Regression analysis is used to predict the value
of one variable based on the value of another variable.
- ANS: True
- Rationale: Regression analysis is used to predict the value
of a dependent variable based on the value of one or more
independent variables.
©2025
, Multiple Response Questions
7. Which of the following are measures of central tendency?
(Select all that apply)
- A. Mean
- B. Median
- C. Mode
- D. Range
- ANS: A. Mean, B. Median, C. Mode
- Rationale: Measures of central tendency include the mean,
median, and mode. The range is a measure of variability.
8. What are the assumptions of the independent t-test? (Select all
that apply)
- A. The data are normally distributed
- B. The samples are dependent
- C. The variances of the two groups are equal
- D. The data are measured on an ordinal scale
- ANS: A. The data are normally distributed, C. The
variances of the two groups are equal
- Rationale: The independent t-test assumes that the data are
normally distributed and that the variances of the two groups are
©2025
