WGU C207 DATA-DRIVEN DECISION-MAKING OA
EXAM 300 ACTUAL QUESTIONS AND CORRECT
ANSWERS WITH RATIONALE LATEST UPDATE
ALREADY GRADED A+
This comprehensive collection contains 300 unique, non-repeating multiple-choice
questions covering the full scope of the WGU C207 Data-Driven Decision Making
Objective Assessment exam. Each question includes four answer options, the
correct response, and a detailed rationale explaining the underlying concept. The
set addresses every major competency, including the case for quantitative analysis,
descriptive and inferential statistics, hypothesis testing, regression, quality tools
like Six Sigma and control charts, performance measurement with balanced
scorecards and KPIs, project management, risk assessment, and machine learning
applications. Together, these questions provide an extensive, in-depth review to
help candidates master data-driven decision-making concepts and confidently
prepare for certification.
Question 1
What is the primary purpose of quantitative analysis in business decision-making?
A) To collect data for future reference
B) To make fact-based decisions and reduce risk
C) To eliminate the need for managerial judgment
D) To replace qualitative analysis entirely
Correct Answer: B
Rationale: The primary purpose of quantitative analysis is to enable managers to
make fact-based decisions, predict outcomes, reduce risk, and inform strategic
choices. It does not eliminate judgment but supports it with data .
---
Question 2
What is the first stage of Davenport and Kim's Three-Stage Model of quantitative
decision making?
A) Analyze the data
B) Solve the problem
,C) Communicate the results
D) Frame the problem
Correct Answer: D
Rationale: The Davenport-Kim model begins with framing the problem, which
involves understanding the decision environment and defining the issue correctly
before any analysis can take place .
---
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
Rationale: Descriptive analytics is used to summarize historical data to identify
patterns and trends. This manager is analyzing past sales data to understand a past
event .
---
Question 4
A manufacturer wants to maximize their factory output while specifically
minimizing labor costs. What type of analytics might they employ to achieve this
goal?
A) Descriptive Analytics
B) Predictive Analytics
C) Prescriptive Analytics
D) Diagnostic Analytics
Correct Answer: C
Rationale: Prescriptive analytics recommends the best course of action by using
optimization and simulation techniques. Maximizing output while minimizing
costs is a classic prescriptive analytics problem .
,---
Question 5
Which statistic best summarizes the center of a skewed income distribution?
A) Mean
B) Median
C) Standard deviation
D) Variance
Correct Answer: B
Rationale: Income data are typically right-skewed due to extreme high values. The
median is resistant to outliers and better represents the center, while the mean is
pulled toward extreme values .
---
Question 6
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
Rationale: The measurements are consistent (reliable) because they cluster closely
together, but they are not valid because they do not measure the true freezing point
of 32°F .
---
Question 7
Which measure of central tendency is appropriate for nominal data?
A) Mean
B) Median
C) Mode
D) All of the above
Correct Answer: C
, Rationale: Nominal data are categories with no order. The only measure of central
tendency that applies is the mode (the most frequent category). Mean and median
require numeric values with order .
---
Question 8
Runners cover 26.2 miles in the Olympics marathon. What level of measurement is
this?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct Answer: D
Rationale: Distance has a true zero point and equal intervals between values,
making it ratio data. A marathon distance of 0 miles would mean no race .
---
Question 9
What level of measurement is the type of cars produced in a Ford factory?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct Answer: A
Rationale: Types of cars (sedan, SUV, truck) are categories with no inherent order
or numeric value. This is nominal data, the lowest level of measurement .
---
Question 10
What is the key difference between a parameter and a statistic?
A) Parameter describes a sample; statistic describes a population
B) Parameter describes a population; statistic describes a sample
C) Both describe populations
D) Both describe samples
EXAM 300 ACTUAL QUESTIONS AND CORRECT
ANSWERS WITH RATIONALE LATEST UPDATE
ALREADY GRADED A+
This comprehensive collection contains 300 unique, non-repeating multiple-choice
questions covering the full scope of the WGU C207 Data-Driven Decision Making
Objective Assessment exam. Each question includes four answer options, the
correct response, and a detailed rationale explaining the underlying concept. The
set addresses every major competency, including the case for quantitative analysis,
descriptive and inferential statistics, hypothesis testing, regression, quality tools
like Six Sigma and control charts, performance measurement with balanced
scorecards and KPIs, project management, risk assessment, and machine learning
applications. Together, these questions provide an extensive, in-depth review to
help candidates master data-driven decision-making concepts and confidently
prepare for certification.
Question 1
What is the primary purpose of quantitative analysis in business decision-making?
A) To collect data for future reference
B) To make fact-based decisions and reduce risk
C) To eliminate the need for managerial judgment
D) To replace qualitative analysis entirely
Correct Answer: B
Rationale: The primary purpose of quantitative analysis is to enable managers to
make fact-based decisions, predict outcomes, reduce risk, and inform strategic
choices. It does not eliminate judgment but supports it with data .
---
Question 2
What is the first stage of Davenport and Kim's Three-Stage Model of quantitative
decision making?
A) Analyze the data
B) Solve the problem
,C) Communicate the results
D) Frame the problem
Correct Answer: D
Rationale: The Davenport-Kim model begins with framing the problem, which
involves understanding the decision environment and defining the issue correctly
before any analysis can take place .
---
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
Rationale: Descriptive analytics is used to summarize historical data to identify
patterns and trends. This manager is analyzing past sales data to understand a past
event .
---
Question 4
A manufacturer wants to maximize their factory output while specifically
minimizing labor costs. What type of analytics might they employ to achieve this
goal?
A) Descriptive Analytics
B) Predictive Analytics
C) Prescriptive Analytics
D) Diagnostic Analytics
Correct Answer: C
Rationale: Prescriptive analytics recommends the best course of action by using
optimization and simulation techniques. Maximizing output while minimizing
costs is a classic prescriptive analytics problem .
,---
Question 5
Which statistic best summarizes the center of a skewed income distribution?
A) Mean
B) Median
C) Standard deviation
D) Variance
Correct Answer: B
Rationale: Income data are typically right-skewed due to extreme high values. The
median is resistant to outliers and better represents the center, while the mean is
pulled toward extreme values .
---
Question 6
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
Rationale: The measurements are consistent (reliable) because they cluster closely
together, but they are not valid because they do not measure the true freezing point
of 32°F .
---
Question 7
Which measure of central tendency is appropriate for nominal data?
A) Mean
B) Median
C) Mode
D) All of the above
Correct Answer: C
, Rationale: Nominal data are categories with no order. The only measure of central
tendency that applies is the mode (the most frequent category). Mean and median
require numeric values with order .
---
Question 8
Runners cover 26.2 miles in the Olympics marathon. What level of measurement is
this?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct Answer: D
Rationale: Distance has a true zero point and equal intervals between values,
making it ratio data. A marathon distance of 0 miles would mean no race .
---
Question 9
What level of measurement is the type of cars produced in a Ford factory?
A) Nominal
B) Ordinal
C) Interval
D) Ratio
Correct Answer: A
Rationale: Types of cars (sedan, SUV, truck) are categories with no inherent order
or numeric value. This is nominal data, the lowest level of measurement .
---
Question 10
What is the key difference between a parameter and a statistic?
A) Parameter describes a sample; statistic describes a population
B) Parameter describes a population; statistic describes a sample
C) Both describe populations
D) Both describe samples
