HIM325
Healthcare Statistics & Research
Comprehensive Test Review (Qns & Ans)
2025
1. Which of the following best describes the purpose of
inferential statistics in healthcare research?
- A) To summarize and describe the data
- B) To determine the relationship between variables
- C) To make predictions and generalize findings from a sample
to a population
- D) To measure the central tendency of the data
- ANS: C) To make predictions and generalize findings from a
sample to a population
©/2025
, - Rationale: Inferential statistics allow researchers to make
predictions and generalize findings from a sample to the larger
population, making it essential for drawing conclusions in
healthcare research.
2. What is the primary purpose of a randomized controlled trial
(RCT) in healthcare research?
- A) To observe natural behaviors without intervention
- B) To compare the effectiveness of different treatments
- C) To identify correlations between variables
- D) To explore qualitative aspects of healthcare
- ANS: B) To compare the effectiveness of different
treatments
- Rationale: A randomized controlled trial (RCT) is designed
to compare the effectiveness of different treatments by randomly
assigning participants to intervention and control groups, reducing
bias and ensuring the reliability of the results.
3. Which of the following measures is used to describe the
spread or variability of data in healthcare research?
- A) Mean
- B) Median
- C) Standard deviation
- D) Mode
©/2025
, - ANS: C) Standard deviation
- Rationale: Standard deviation measures the spread or
variability of data around the mean, providing insights into the
consistency and reliability of the data.
Fill-in-the-Blank Questions
4. __________ is a statistical test used to determine the
relationship between two categorical variables.
- ANS: Chi-square test
- Rationale: The chi-square test is used to determine the
relationship between two categorical variables by comparing
observed frequencies to expected frequencies.
5. In healthcare research, __________ refers to the consistency
and repeatability of a measurement or test.
- ANS: Reliability
- Rationale: Reliability refers to the consistency and
repeatability of a measurement or test, indicating the
dependability of the data.
6. __________ is the probability of rejecting the null hypothesis
when it is actually true, also known as a Type I error.
- ANS: Alpha (α)
©/2025
Healthcare Statistics & Research
Comprehensive Test Review (Qns & Ans)
2025
1. Which of the following best describes the purpose of
inferential statistics in healthcare research?
- A) To summarize and describe the data
- B) To determine the relationship between variables
- C) To make predictions and generalize findings from a sample
to a population
- D) To measure the central tendency of the data
- ANS: C) To make predictions and generalize findings from a
sample to a population
©/2025
, - Rationale: Inferential statistics allow researchers to make
predictions and generalize findings from a sample to the larger
population, making it essential for drawing conclusions in
healthcare research.
2. What is the primary purpose of a randomized controlled trial
(RCT) in healthcare research?
- A) To observe natural behaviors without intervention
- B) To compare the effectiveness of different treatments
- C) To identify correlations between variables
- D) To explore qualitative aspects of healthcare
- ANS: B) To compare the effectiveness of different
treatments
- Rationale: A randomized controlled trial (RCT) is designed
to compare the effectiveness of different treatments by randomly
assigning participants to intervention and control groups, reducing
bias and ensuring the reliability of the results.
3. Which of the following measures is used to describe the
spread or variability of data in healthcare research?
- A) Mean
- B) Median
- C) Standard deviation
- D) Mode
©/2025
, - ANS: C) Standard deviation
- Rationale: Standard deviation measures the spread or
variability of data around the mean, providing insights into the
consistency and reliability of the data.
Fill-in-the-Blank Questions
4. __________ is a statistical test used to determine the
relationship between two categorical variables.
- ANS: Chi-square test
- Rationale: The chi-square test is used to determine the
relationship between two categorical variables by comparing
observed frequencies to expected frequencies.
5. In healthcare research, __________ refers to the consistency
and repeatability of a measurement or test.
- ANS: Reliability
- Rationale: Reliability refers to the consistency and
repeatability of a measurement or test, indicating the
dependability of the data.
6. __________ is the probability of rejecting the null hypothesis
when it is actually true, also known as a Type I error.
- ANS: Alpha (α)
©/2025
