WGU C784 – Applied Healthcare Statistics Objective
Assessment #1 with Verified Answers & Rationales (2026)
What This Document Contains;
Objective Assessment #1 practice questions for WGU C784 – Applied Healthcare
Statistics
Clearly written multiple-choice exam questions
Correct answers clearly indicated
Concise rationales explaining why each answer is correct
Coverage of key OA topics: statistics basics, data interpretation, probability, and
healthcare-related calculations
Structured to mirror the actual WGU OA exam format
WGU C784 – Applied Healthcare Statistics Objective
Assessment #1 with Verified Answers & Rationales (2026)
Question 1:
Given the following set of numbers: 3.3, -2.3, -16, 25. What are the square roots
of the whole number?
A. ± 2.3
B. ± 3.3
C. ± 4
D. ± 5
Correct Answer: D. ± 5
,Rationale: Only 25 is a perfect square among the numbers. The square root of 25
is ±5.
Question 2:
Composite Number – What is a composite number?
A. A number divisible only by 1 and itself
B. A number with exactly two factors
C. A number with more than two factors
D. A number that is prime
Correct Answer: C. A number with more than two factors
Rationale: Composite numbers have factors other than 1 and themselves, unlike
prime numbers.
Question 3:
Equivalent Fractions – What are equivalent fractions?
A. Fractions with the same numerator
B. Fractions with the same denominator
C. Fractions representing different values
D. Fractions representing the same value
Correct Answer: D. Fractions representing the same value
Rationale: Equivalent fractions are different fractions that simplify or scale to the
same value.
Question 4:
X-Axis – What is the X-axis?
A. The vertical line on a graph
B. The horizontal line that passes through the origin
C. The diagonal line on a coordinate plane
D. The line representing the dependent variable
,Correct Answer: B. The horizontal line that passes through the origin
Rationale: The X-axis is the horizontal reference line in a coordinate system.
Question 5:
Qualitative Data – What is qualitative data?
A. Numeric data only
B. Binary data
C. Data measured on a scale
D. Non-numeric information based on some quality
Correct Answer: D. Non-numeric information based on some quality
Rationale: Qualitative data describes attributes or characteristics rather than
numbers.
Question 6:
No Correlation – What does no correlation indicate between two variables?
A. There is a strong positive relationship
B. There is a strong negative relationship
C. There is no apparent overall trend; a correlation coefficient of 0 only rules out
a linear trend
D. Variables are identical
Correct Answer: C. There is no apparent overall trend; a correlation coefficient
of 0 only rules out a linear trend
Rationale: A zero correlation does not necessarily mean there is no
relationship—it only rules out a straight-line (linear) relationship; there could
still be a non-linear pattern.
Question 7:
, Extrapolate – What does it mean to extrapolate?
A. To average all the data points
B. Using information from a data set to make predictions outside of the original
data set
C. Removing outliers from the data set
D. Plotting data on a graph
Correct Answer: B. Using information from a data set to make predictions
outside of the original data set
Rationale: Extrapolation extends known data trends beyond the observed values
to estimate unknown values.
Question 8:
Event – In probability, what is an event?
A. A guaranteed outcome
B. A set of possible outcomes whose chance of occurrence can be represented by
probability
C. Any number in a data set
D. A data outlier
Correct Answer: B. A set of possible outcomes whose chance of occurrence can
be represented by probability
Rationale: An event is a subset of all possible outcomes in an experiment, for
which probabilities can be assigned.
Question 9:
Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when
adding only the whole numbers?
A. 5.5
B. 11
Assessment #1 with Verified Answers & Rationales (2026)
What This Document Contains;
Objective Assessment #1 practice questions for WGU C784 – Applied Healthcare
Statistics
Clearly written multiple-choice exam questions
Correct answers clearly indicated
Concise rationales explaining why each answer is correct
Coverage of key OA topics: statistics basics, data interpretation, probability, and
healthcare-related calculations
Structured to mirror the actual WGU OA exam format
WGU C784 – Applied Healthcare Statistics Objective
Assessment #1 with Verified Answers & Rationales (2026)
Question 1:
Given the following set of numbers: 3.3, -2.3, -16, 25. What are the square roots
of the whole number?
A. ± 2.3
B. ± 3.3
C. ± 4
D. ± 5
Correct Answer: D. ± 5
,Rationale: Only 25 is a perfect square among the numbers. The square root of 25
is ±5.
Question 2:
Composite Number – What is a composite number?
A. A number divisible only by 1 and itself
B. A number with exactly two factors
C. A number with more than two factors
D. A number that is prime
Correct Answer: C. A number with more than two factors
Rationale: Composite numbers have factors other than 1 and themselves, unlike
prime numbers.
Question 3:
Equivalent Fractions – What are equivalent fractions?
A. Fractions with the same numerator
B. Fractions with the same denominator
C. Fractions representing different values
D. Fractions representing the same value
Correct Answer: D. Fractions representing the same value
Rationale: Equivalent fractions are different fractions that simplify or scale to the
same value.
Question 4:
X-Axis – What is the X-axis?
A. The vertical line on a graph
B. The horizontal line that passes through the origin
C. The diagonal line on a coordinate plane
D. The line representing the dependent variable
,Correct Answer: B. The horizontal line that passes through the origin
Rationale: The X-axis is the horizontal reference line in a coordinate system.
Question 5:
Qualitative Data – What is qualitative data?
A. Numeric data only
B. Binary data
C. Data measured on a scale
D. Non-numeric information based on some quality
Correct Answer: D. Non-numeric information based on some quality
Rationale: Qualitative data describes attributes or characteristics rather than
numbers.
Question 6:
No Correlation – What does no correlation indicate between two variables?
A. There is a strong positive relationship
B. There is a strong negative relationship
C. There is no apparent overall trend; a correlation coefficient of 0 only rules out
a linear trend
D. Variables are identical
Correct Answer: C. There is no apparent overall trend; a correlation coefficient
of 0 only rules out a linear trend
Rationale: A zero correlation does not necessarily mean there is no
relationship—it only rules out a straight-line (linear) relationship; there could
still be a non-linear pattern.
Question 7:
, Extrapolate – What does it mean to extrapolate?
A. To average all the data points
B. Using information from a data set to make predictions outside of the original
data set
C. Removing outliers from the data set
D. Plotting data on a graph
Correct Answer: B. Using information from a data set to make predictions
outside of the original data set
Rationale: Extrapolation extends known data trends beyond the observed values
to estimate unknown values.
Question 8:
Event – In probability, what is an event?
A. A guaranteed outcome
B. A set of possible outcomes whose chance of occurrence can be represented by
probability
C. Any number in a data set
D. A data outlier
Correct Answer: B. A set of possible outcomes whose chance of occurrence can
be represented by probability
Rationale: An event is a subset of all possible outcomes in an experiment, for
which probabilities can be assigned.
Question 9:
Given the following set of numbers: 10, 2.5, -4, -4.5, 5. What is the sum when
adding only the whole numbers?
A. 5.5
B. 11
