WGU C784 APPLIED HEALTHCARE
STATISTICS OBJECTIVE ASSESSMENT
(OA) ACTUAL EXAM 2026/2027 |
Verified Questions
Higher Education Healthcare Analytics Curriculum | Verified
Q&A | Advanced Healthcare Statistics and Data Analysis
Learners
50 Questions | 2026/2027 Applied Healthcare Statistics Objective Assessment
Introduction
This document contains 50 original questions covering Descriptive Statistics and Data Visualization in
Healthcare, Probability, Distributions, and Sampling in Clinical Research, Hypothesis Testing and
Inferential Statistics for Healthcare Outcomes, and Correlation, Regression, and Predictive Analytics in
Health Informatics. The questions are designed to reinforce WGU C784 course objectives for actual
exam readiness and advanced analytical proficiency through accurate statistical interpretation, sound
clinical inquiry, and data-driven healthcare decision-making.
Actual Questions
Domain: Descriptive Statistics and Data Visualization in Healthcare
1. A hospital dataset classifies discharge destination as home, skilled nursing facility,
rehabilitation, or hospice. What measurement level is this variable?
A. Interval.
B. Ratio.
C. Ordinal.
D. Nominal.
Correct Answer: D
Rationale: Nominal variables are categories without an inherent order. Discharge destination labels
identify groups but do not represent ranked quantities.
2. A patient-experience survey uses response categories of poor, fair, good, very good, and
excellent. What measurement level is represented?
A. Nominal.
B. Ordinal.
C. Ratio.
D. Interval.
Correct Answer: B
Rationale: Ordinal categories have a meaningful order, but the distance between categories cannot be
assumed equal.
WGU C784 APPLIED HEALTHCARE STATISTICS OBJECTIVE ASSESSMENT (OA) ACTUAL EXAM 2026/2027 | Verified Questions
, 3. Which variable is measured on a ratio scale?
A. Length of stay measured in days.
B. Pain category of mild, moderate, or severe.
C. Blood type.
D. Temperature in degrees Celsius.
Correct Answer: A
Rationale: A ratio scale has equal intervals and a meaningful zero. Length of stay can be zero days and
ratios are meaningful.
4. Which measure of central tendency is found by adding values and dividing by the
number of values?
A. Interquartile range.
B. Mode.
C. Mean.
D. Median.
Correct Answer: C
Rationale: The mean is the arithmetic average. It is useful for symmetric continuous data but can be
influenced by extreme values.
5. Which measure of central tendency is often preferred for a strongly right-skewed
distribution of hospital charges?
A. Standard deviation.
B. Median.
C. Variance.
D. Mean.
Correct Answer: B
Rationale: The median is the middle value and is less sensitive to extreme high charges. It better
represents the typical value in a strongly skewed distribution.
6. What does the mode identify?
A. The arithmetic average.
B. The midpoint of ordered values.
C. The spread between quartiles.
D. The most frequently occurring value or category.
Correct Answer: D
Rationale: The mode is the value or category with the highest frequency. It is especially useful for nominal
data.
7. What does the range describe?
A. The middle 50 percent of values.
B. The difference between the highest and lowest observed values.
C. The average distance from the mean.
D. The probability of an outcome.
Correct Answer: B
Rationale: Range is a simple measure of dispersion based on the smallest and largest observations. It is
highly affected by outliers.
WGU C784 APPLIED HEALTHCARE STATISTICS OBJECTIVE ASSESSMENT (OA) ACTUAL EXAM 2026/2027 | Verified Questions
STATISTICS OBJECTIVE ASSESSMENT
(OA) ACTUAL EXAM 2026/2027 |
Verified Questions
Higher Education Healthcare Analytics Curriculum | Verified
Q&A | Advanced Healthcare Statistics and Data Analysis
Learners
50 Questions | 2026/2027 Applied Healthcare Statistics Objective Assessment
Introduction
This document contains 50 original questions covering Descriptive Statistics and Data Visualization in
Healthcare, Probability, Distributions, and Sampling in Clinical Research, Hypothesis Testing and
Inferential Statistics for Healthcare Outcomes, and Correlation, Regression, and Predictive Analytics in
Health Informatics. The questions are designed to reinforce WGU C784 course objectives for actual
exam readiness and advanced analytical proficiency through accurate statistical interpretation, sound
clinical inquiry, and data-driven healthcare decision-making.
Actual Questions
Domain: Descriptive Statistics and Data Visualization in Healthcare
1. A hospital dataset classifies discharge destination as home, skilled nursing facility,
rehabilitation, or hospice. What measurement level is this variable?
A. Interval.
B. Ratio.
C. Ordinal.
D. Nominal.
Correct Answer: D
Rationale: Nominal variables are categories without an inherent order. Discharge destination labels
identify groups but do not represent ranked quantities.
2. A patient-experience survey uses response categories of poor, fair, good, very good, and
excellent. What measurement level is represented?
A. Nominal.
B. Ordinal.
C. Ratio.
D. Interval.
Correct Answer: B
Rationale: Ordinal categories have a meaningful order, but the distance between categories cannot be
assumed equal.
WGU C784 APPLIED HEALTHCARE STATISTICS OBJECTIVE ASSESSMENT (OA) ACTUAL EXAM 2026/2027 | Verified Questions
, 3. Which variable is measured on a ratio scale?
A. Length of stay measured in days.
B. Pain category of mild, moderate, or severe.
C. Blood type.
D. Temperature in degrees Celsius.
Correct Answer: A
Rationale: A ratio scale has equal intervals and a meaningful zero. Length of stay can be zero days and
ratios are meaningful.
4. Which measure of central tendency is found by adding values and dividing by the
number of values?
A. Interquartile range.
B. Mode.
C. Mean.
D. Median.
Correct Answer: C
Rationale: The mean is the arithmetic average. It is useful for symmetric continuous data but can be
influenced by extreme values.
5. Which measure of central tendency is often preferred for a strongly right-skewed
distribution of hospital charges?
A. Standard deviation.
B. Median.
C. Variance.
D. Mean.
Correct Answer: B
Rationale: The median is the middle value and is less sensitive to extreme high charges. It better
represents the typical value in a strongly skewed distribution.
6. What does the mode identify?
A. The arithmetic average.
B. The midpoint of ordered values.
C. The spread between quartiles.
D. The most frequently occurring value or category.
Correct Answer: D
Rationale: The mode is the value or category with the highest frequency. It is especially useful for nominal
data.
7. What does the range describe?
A. The middle 50 percent of values.
B. The difference between the highest and lowest observed values.
C. The average distance from the mean.
D. The probability of an outcome.
Correct Answer: B
Rationale: Range is a simple measure of dispersion based on the smallest and largest observations. It is
highly affected by outliers.
WGU C784 APPLIED HEALTHCARE STATISTICS OBJECTIVE ASSESSMENT (OA) ACTUAL EXAM 2026/2027 | Verified Questions
