WGU C784 APPLIED HEALTHCARE STATISTICS OA – COMPREHENSIVE QUESTIONS
AND ANSWERS | VERIFIED AND WELLDETAILED ANSWERS | DETAILED EXPLANATIONS AND
RATIONALES | COMPLETE EXAM PREPARATION STUDY GUIDE | PRACTICE QUESTIONS |
LATEST EXAM UPDATE
• FRONT MATTER *
CORE DOMAINS
• Basic Arithmetic, Fractions, Signed Numbers, and Ratios
• Introductory Algebra, Equations, Functions, and Graphing
• Descriptive Statistics and Data Interpretation
• Measures of Central Tendency and Variability
• Probability and Probability Rules
• Probability Distributions and Normal Distribution
• Correlation and Linear Regression
• Research Design, Sampling, Bias, and Statistical Reasoning
• Healthcare Data Interpretation and Evidence-Based Decision-Making
INTRODUCTION
This assessment is designed to develop and evaluate practical competence in the
mathematical and statistical concepts emphasized in WGU C784 Applied Healthcare
Statistics. The material covers arithmetic, introductory algebra and graphing, descriptive
statistics, probability, correlation, regression, research design, and interpretation of
statistical evidence. Questions use multiple-choice formats to reinforce both calculation and
conceptual understanding. Particular emphasis is placed on interpreting data, recognizing
appropriate statistical methods, evaluating study results, and applying quantitative
reasoning to healthcare situations. The assessment progresses from foundational knowledge
to applied and analytical problems so learners can practice the type of reasoning required
when working with statistical information and making evidence-informed decisions.
SECTION ONE: QUESTIONS 1–100
Question 1. Which statement best describes the primary purpose of descriptive statistics?
A. To prove that one variable causes another
B. To summarize and describe characteristics of a dataset
C. To predict future observations with certainty
D. To eliminate sampling error completely
Correct Answer: B. To summarize and describe characteristics of a dataset
Explanation: Descriptive statistics organize, summarize, and present data so that important
characteristics can be understood. They include measures such as the mean, median, mode,
,range, and standard deviation. They do not by themselves establish causation or eliminate
sampling error.
Question 2. A healthcare analyst records the number of patients seen by a clinic each day.
What type of variable is the number of patients?
A. Continuous quantitative variable
B. Nominal categorical variable
C. Discrete quantitative variable
D. Ordinal categorical variable
Correct Answer: C. Discrete quantitative variable
Explanation: The number of patients is a count and can take whole-number values such as
25, 26, or 27. Count variables are discrete quantitative variables. A continuous variable can
take values within an interval, such as weight or temperature.
Question 3. Which measurement scale is represented by blood type categories such as A, B,
AB, and O?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
Correct Answer: A. Nominal
Explanation: Nominal variables classify observations into categories without any meaningful
ranking. Blood type categories have labels but no natural order, making blood type a
nominal variable.
Question 4. A patient weighs 154 pounds. What is the best description of 154 in this
context?
A. A qualitative variable
B. A quantitative measurement
C. An ordinal category
D. A nominal classification
Correct Answer: B. A quantitative measurement
Explanation: Weight is numerical and can be meaningfully measured and compared.
Therefore, 154 pounds represents quantitative data.
Question 5. Which expression represents the commutative property of addition?
A. 7 + 3 = 3 + 7
B. 7(3 + 2) = 7(3) + 7(2)
, C. 7 + 0 = 7
D. 7(1) = 7
Correct Answer: A. 7 + 3 = 3 + 7
Explanation: The commutative property states that changing the order of the terms does not
change the result. Thus, 7 + 3 and 3 + 7 are equal.
Question 6. What is the value of 3/4 + 1/8?
A. 4/12
B. 7/8
C. 5/8
D. 1
Correct Answer: B. 7/8
Explanation: Convert 3/4 to eighths: 3/4 = 6/8. Then 6/8 + 1/8 = 7/8.
Question 7. What is the value of 5/6 − 1/3?
A. 1/2
B. 2/3
C. 4/3
D. 1/3
Correct Answer: A. 1/2
Explanation: Convert 1/3 to 2/6. Therefore, 5/6 − 2/6 = 3/6 = 1/2.
Question 8. A clinic has 80 patients, and 20% are pediatric patients. How many pediatric
patients are there?
A. 12
B. 16
C. 20
D. 24
Correct Answer: B. 16
Explanation: Twenty percent of 80 is 0.20 × 80 = 16. Therefore, 16 patients are pediatric
patients.
Question 9. Which fraction is equivalent to 0.75?
A. 1/4
B. 2/5
C. 3/4
D. 4/5
AND ANSWERS | VERIFIED AND WELLDETAILED ANSWERS | DETAILED EXPLANATIONS AND
RATIONALES | COMPLETE EXAM PREPARATION STUDY GUIDE | PRACTICE QUESTIONS |
LATEST EXAM UPDATE
• FRONT MATTER *
CORE DOMAINS
• Basic Arithmetic, Fractions, Signed Numbers, and Ratios
• Introductory Algebra, Equations, Functions, and Graphing
• Descriptive Statistics and Data Interpretation
• Measures of Central Tendency and Variability
• Probability and Probability Rules
• Probability Distributions and Normal Distribution
• Correlation and Linear Regression
• Research Design, Sampling, Bias, and Statistical Reasoning
• Healthcare Data Interpretation and Evidence-Based Decision-Making
INTRODUCTION
This assessment is designed to develop and evaluate practical competence in the
mathematical and statistical concepts emphasized in WGU C784 Applied Healthcare
Statistics. The material covers arithmetic, introductory algebra and graphing, descriptive
statistics, probability, correlation, regression, research design, and interpretation of
statistical evidence. Questions use multiple-choice formats to reinforce both calculation and
conceptual understanding. Particular emphasis is placed on interpreting data, recognizing
appropriate statistical methods, evaluating study results, and applying quantitative
reasoning to healthcare situations. The assessment progresses from foundational knowledge
to applied and analytical problems so learners can practice the type of reasoning required
when working with statistical information and making evidence-informed decisions.
SECTION ONE: QUESTIONS 1–100
Question 1. Which statement best describes the primary purpose of descriptive statistics?
A. To prove that one variable causes another
B. To summarize and describe characteristics of a dataset
C. To predict future observations with certainty
D. To eliminate sampling error completely
Correct Answer: B. To summarize and describe characteristics of a dataset
Explanation: Descriptive statistics organize, summarize, and present data so that important
characteristics can be understood. They include measures such as the mean, median, mode,
,range, and standard deviation. They do not by themselves establish causation or eliminate
sampling error.
Question 2. A healthcare analyst records the number of patients seen by a clinic each day.
What type of variable is the number of patients?
A. Continuous quantitative variable
B. Nominal categorical variable
C. Discrete quantitative variable
D. Ordinal categorical variable
Correct Answer: C. Discrete quantitative variable
Explanation: The number of patients is a count and can take whole-number values such as
25, 26, or 27. Count variables are discrete quantitative variables. A continuous variable can
take values within an interval, such as weight or temperature.
Question 3. Which measurement scale is represented by blood type categories such as A, B,
AB, and O?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
Correct Answer: A. Nominal
Explanation: Nominal variables classify observations into categories without any meaningful
ranking. Blood type categories have labels but no natural order, making blood type a
nominal variable.
Question 4. A patient weighs 154 pounds. What is the best description of 154 in this
context?
A. A qualitative variable
B. A quantitative measurement
C. An ordinal category
D. A nominal classification
Correct Answer: B. A quantitative measurement
Explanation: Weight is numerical and can be meaningfully measured and compared.
Therefore, 154 pounds represents quantitative data.
Question 5. Which expression represents the commutative property of addition?
A. 7 + 3 = 3 + 7
B. 7(3 + 2) = 7(3) + 7(2)
, C. 7 + 0 = 7
D. 7(1) = 7
Correct Answer: A. 7 + 3 = 3 + 7
Explanation: The commutative property states that changing the order of the terms does not
change the result. Thus, 7 + 3 and 3 + 7 are equal.
Question 6. What is the value of 3/4 + 1/8?
A. 4/12
B. 7/8
C. 5/8
D. 1
Correct Answer: B. 7/8
Explanation: Convert 3/4 to eighths: 3/4 = 6/8. Then 6/8 + 1/8 = 7/8.
Question 7. What is the value of 5/6 − 1/3?
A. 1/2
B. 2/3
C. 4/3
D. 1/3
Correct Answer: A. 1/2
Explanation: Convert 1/3 to 2/6. Therefore, 5/6 − 2/6 = 3/6 = 1/2.
Question 8. A clinic has 80 patients, and 20% are pediatric patients. How many pediatric
patients are there?
A. 12
B. 16
C. 20
D. 24
Correct Answer: B. 16
Explanation: Twenty percent of 80 is 0.20 × 80 = 16. Therefore, 16 patients are pediatric
patients.
Question 9. Which fraction is equivalent to 0.75?
A. 1/4
B. 2/5
C. 3/4
D. 4/5
