WGU C207 DATA-DRIVEN DECISION MAKING OA
FINAL EXAM QUESTIONS, ANSWERS AND
RATIONALES 2027
QUESTION 1
Amanda is measuring the temperature. She looks at the
thermometer and sees that it is somewhere between 65 and 66
degrees Fahrenheit. Temperature is what type of data?
A) Nominal, Discrete
B) Nominal, Continuous
C) Ordinal, Discrete
D) Continuous, Discrete
Correct Answer: D) Continuous, Discrete.
Rationale: Temperature is continuous data because it can take any
value within a range. It is also discrete in the sense of measurement
increments, but the correct classification is continuous data as it
can be any number within a range .
QUESTION 2
What is the first stage of Davenport and Kim's Three-Stage Model
of quantitative decision making?
,A) Communicate the results
B) Frame the problem
C) Solve the problem
D) Analyze the data
Correct Answer: B) Frame the problem.
Rationale: The first stage is to frame the problem by understanding
the environment of a problem. After that, one can solve the
problem and communicate the results to others .
QUESTION 3
A manager is looking at his previous quarter and determining the
causes for a sudden sales spike to gain a better understanding of
the actions and outcomes. Which type of analytics would the
manager use?
A) Predictive Analytics
B) Prescriptive Analytics
C) Descriptive Analytics
D) Proactive Analytics
Correct Answer: C) Descriptive Analytics.
,Rationale: Descriptive analytics is used to describe the
characteristics of what is being studied by summarizing historical
data to identify patterns and trends .
QUESTION 4
Which statistic best summarizes the center of a skewed income
distribution?
A) Mean
B) Median
C) Standard deviation
D) Variance
Correct Answer: B) Median.
Rationale: Income data are typically right-skewed due to extreme
high values. The median is resistant to outliers, while the mean is
pulled toward extreme values .
QUESTION 5
Adam measures the temperature of a freezing lake ten times with
the same thermometer and gets: 20, 21, 21, 20, 20, 19, 19, 21, 20,
19°F. Is his thermometer reliable? Is it valid? (Freezing point is
32°F)
, A) Reliable and Valid
B) Reliable but not Valid
C) Not Reliable but Valid
D) Not Reliable and Not Valid
Correct Answer: B) Reliable but not Valid.
Rationale: Reliability refers to consistency of measurement; the
temperatures are clustered closely together, so the thermometer is
reliable. Validity refers to accuracy; freezing point is 32°F, so the
thermometer is not valid. The thermometer consistently gives the
wrong temperature .
QUESTION 6
The standard deviation of a dataset is zero. What does this
indicate?
A) All values are negative
B) All values are positive
C) All values are identical
D) The mean is zero
Correct Answer: C) All values are identical.
FINAL EXAM QUESTIONS, ANSWERS AND
RATIONALES 2027
QUESTION 1
Amanda is measuring the temperature. She looks at the
thermometer and sees that it is somewhere between 65 and 66
degrees Fahrenheit. Temperature is what type of data?
A) Nominal, Discrete
B) Nominal, Continuous
C) Ordinal, Discrete
D) Continuous, Discrete
Correct Answer: D) Continuous, Discrete.
Rationale: Temperature is continuous data because it can take any
value within a range. It is also discrete in the sense of measurement
increments, but the correct classification is continuous data as it
can be any number within a range .
QUESTION 2
What is the first stage of Davenport and Kim's Three-Stage Model
of quantitative decision making?
,A) Communicate the results
B) Frame the problem
C) Solve the problem
D) Analyze the data
Correct Answer: B) Frame the problem.
Rationale: The first stage is to frame the problem by understanding
the environment of a problem. After that, one can solve the
problem and communicate the results to others .
QUESTION 3
A manager is looking at his previous quarter and determining the
causes for a sudden sales spike to gain a better understanding of
the actions and outcomes. Which type of analytics would the
manager use?
A) Predictive Analytics
B) Prescriptive Analytics
C) Descriptive Analytics
D) Proactive Analytics
Correct Answer: C) Descriptive Analytics.
,Rationale: Descriptive analytics is used to describe the
characteristics of what is being studied by summarizing historical
data to identify patterns and trends .
QUESTION 4
Which statistic best summarizes the center of a skewed income
distribution?
A) Mean
B) Median
C) Standard deviation
D) Variance
Correct Answer: B) Median.
Rationale: Income data are typically right-skewed due to extreme
high values. The median is resistant to outliers, while the mean is
pulled toward extreme values .
QUESTION 5
Adam measures the temperature of a freezing lake ten times with
the same thermometer and gets: 20, 21, 21, 20, 20, 19, 19, 21, 20,
19°F. Is his thermometer reliable? Is it valid? (Freezing point is
32°F)
, A) Reliable and Valid
B) Reliable but not Valid
C) Not Reliable but Valid
D) Not Reliable and Not Valid
Correct Answer: B) Reliable but not Valid.
Rationale: Reliability refers to consistency of measurement; the
temperatures are clustered closely together, so the thermometer is
reliable. Validity refers to accuracy; freezing point is 32°F, so the
thermometer is not valid. The thermometer consistently gives the
wrong temperature .
QUESTION 6
The standard deviation of a dataset is zero. What does this
indicate?
A) All values are negative
B) All values are positive
C) All values are identical
D) The mean is zero
Correct Answer: C) All values are identical.
