C784 MATH 1100
Applied Healthcare Statistics
FA Review (Qns & Ans)
2025
1. Which measure of central tendency is most appropriate for
skewed data distributions?
- A) Mean
- B) Median
- C) Mode
- D) Range
ANS: B) Median
©2025
, Rationale: The median is the measure of central tendency that
is least affected by extreme values and is therefore most
appropriate for skewed data distributions.
2. What is the primary purpose of conducting a hypothesis test in
healthcare research?
- A) To describe the characteristics of a sample
- B) To estimate population parameters
- C) To determine if there is a significant difference or
relationship
- D) To visualize data trends
ANS: C) To determine if there is a significant difference or
relationship
Rationale: Hypothesis testing is used to assess whether
observed data provide sufficient evidence to support or reject a
specific hypothesis about the population.
Fill-in-the-Blank
3. __________ is a statistical method used to estimate the
relationship between a dependent variable and one or more
independent variables.
©2025
, ANS: Regression analysis.
Rationale: Regression analysis is used to identify and
quantify the relationship between variables, often to make
predictions or infer causal relationships.
4. The __________ is a measure of the dispersion or spread of
data points around the mean, and it is the square root of the
variance.
ANS: standard deviation.
Rationale: The standard deviation is a measure of variability
that indicates the average distance of data points from the mean,
providing insight into the spread of data.
True/False
5. In a normal distribution, approximately 68% of the data falls
within one standard deviation of the mean.
ANS: True.
©2025
, Rationale: In a normal distribution, the empirical rule states
that about 68% of the data falls within one standard deviation of
the mean, 95% within two, and 99.7% within three standard
deviations.
6. A p-value greater than 0.05 typically indicates that the null
hypothesis should be rejected.
ANS: False.
Rationale: A p-value greater than 0.05 indicates that there is
not enough evidence to reject the null hypothesis, suggesting that
any observed differences could be due to chance.
Multiple Response
7. Which of the following are assumptions of the independent-
samples t-test?
- A) The samples are independent
- B) The populations are normally distributed
- C) The samples have equal variances
- D) The sample size is greater than 30
©2025
Applied Healthcare Statistics
FA Review (Qns & Ans)
2025
1. Which measure of central tendency is most appropriate for
skewed data distributions?
- A) Mean
- B) Median
- C) Mode
- D) Range
ANS: B) Median
©2025
, Rationale: The median is the measure of central tendency that
is least affected by extreme values and is therefore most
appropriate for skewed data distributions.
2. What is the primary purpose of conducting a hypothesis test in
healthcare research?
- A) To describe the characteristics of a sample
- B) To estimate population parameters
- C) To determine if there is a significant difference or
relationship
- D) To visualize data trends
ANS: C) To determine if there is a significant difference or
relationship
Rationale: Hypothesis testing is used to assess whether
observed data provide sufficient evidence to support or reject a
specific hypothesis about the population.
Fill-in-the-Blank
3. __________ is a statistical method used to estimate the
relationship between a dependent variable and one or more
independent variables.
©2025
, ANS: Regression analysis.
Rationale: Regression analysis is used to identify and
quantify the relationship between variables, often to make
predictions or infer causal relationships.
4. The __________ is a measure of the dispersion or spread of
data points around the mean, and it is the square root of the
variance.
ANS: standard deviation.
Rationale: The standard deviation is a measure of variability
that indicates the average distance of data points from the mean,
providing insight into the spread of data.
True/False
5. In a normal distribution, approximately 68% of the data falls
within one standard deviation of the mean.
ANS: True.
©2025
, Rationale: In a normal distribution, the empirical rule states
that about 68% of the data falls within one standard deviation of
the mean, 95% within two, and 99.7% within three standard
deviations.
6. A p-value greater than 0.05 typically indicates that the null
hypothesis should be rejected.
ANS: False.
Rationale: A p-value greater than 0.05 indicates that there is
not enough evidence to reject the null hypothesis, suggesting that
any observed differences could be due to chance.
Multiple Response
7. Which of the following are assumptions of the independent-
samples t-test?
- A) The samples are independent
- B) The populations are normally distributed
- C) The samples have equal variances
- D) The sample size is greater than 30
©2025
