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WGU C207 DATA DRIVEN DECISION
MAKING QUESTIONS WITH DETAILED
VERIFIED ANSWERS
Frame the Problem, Solving the Problem and Communicating Results are
part of which decision making model? Ans: Davenport-Kim three-stage
model
In which stage of the Davenport-Kim model is problem recognition? Ans:
Framing the problem
In which stage of the Davenport-Kim model is data collection? Ans:
Solving the problem
What is a key reason we study statistics? Ans: To make informed
decisions
Visually presenting the data assists in which stage of the Davenport-Kim
model? Ans: Communicating the results
When does research fail to produce reliable results? Ans: Poor research
validity
What are the two major issues surrounding research standards? Ans:
Best practices and ethics
In order to be a statistically valid sample, the sample must be: Ans: The
appropriate size and random
Not selecting a random sample is what type of bias? Ans: Measurement
Not selecting a right sized sample is what type of bias? Ans:
Measurement
Research best practices eliminate... Ans: Bias
Outliers create this type of error Ans: Out-of Range
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Unpredictable error Ans: Random Error - No correlation
Error may occur from missing data. (Example: Space not filled in) Ans:
Omission Error - Distorted results
This error repeats itself Ans: Systematic Error - Skewed results
Observation points that are distant from other observations. Ans:
Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample Ans:
Measurement bias
Types of Bias: Bias introduced because respondents believe it will be
beneficial if selected. Ans: Conscious bias (key word: benefit)
Consistent and repeatable data Ans: Reliable
Resulting from accurate measurements Ans: Valid data
If a responder lies on their survey, this creates what type of bias? Ans:
Information
Sorting your spreadsheet can expose these errors by moving them to the
very top or the very bottom of the column Ans: Omission or Out-of-
Range
An error that will fix itself over time Ans: Random
An error that will not fix itself. You must do something Ans: Systematic
Cleaning and organizing data Ans: Data Management
Are the following variable quantitative or qualitative? Personality type,
social class, or communication style Ans: Qualitative
A study used when you a conditions can't be controlled Ans:
Observational study
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Observes people going forward in time from the time of their entry into
the study. Ans: Cohort Study
What are the three elements of an experimental study? Ans: Unit,
Treatment, Response
Accurately measures what it is intended to measure Ans: Valid data
________ an experimental study prevents bias. Ans: Blinding
Neither the treatment allocator nor the participant knows in which group
the participant is contributing. (Who is getting the real drug?) Ans:
Double blind study
The participants are not told if they are in the treatment group or control
group Ans: Blind study
Describes characteristics of a dataset. Mean, median, mode, variation,
standard deviation, range.... Ans: Descriptive analytics
Uses data from t he past to predict the future Ans: Predictive
Uses experimental design and optimization to predict a future Ans:
Prescriptive
If we move to six appointments an hour we can increase revenue 2%.
Which form of analytics is this? Ans: Prescriptive - We are taking a
specific course of action
Based on the last four quarters, we can predict $4,1 million in sales next
quarter. Which form of analytics is this? Ans: Predictive: We aren't
taking any action
The number of appointments per day averaged 7 over the last 6 months.
Which form of analytics is this? Ans: Descriptive: We are only describing
the past. No future predictions are made.
Is Big Data structured, unstructured or both? Ans: Both
Where do we store big data Ans: In a big data warehouse
WGU C207 DATA DRIVEN DECISION
MAKING QUESTIONS WITH DETAILED
VERIFIED ANSWERS
Frame the Problem, Solving the Problem and Communicating Results are
part of which decision making model? Ans: Davenport-Kim three-stage
model
In which stage of the Davenport-Kim model is problem recognition? Ans:
Framing the problem
In which stage of the Davenport-Kim model is data collection? Ans:
Solving the problem
What is a key reason we study statistics? Ans: To make informed
decisions
Visually presenting the data assists in which stage of the Davenport-Kim
model? Ans: Communicating the results
When does research fail to produce reliable results? Ans: Poor research
validity
What are the two major issues surrounding research standards? Ans:
Best practices and ethics
In order to be a statistically valid sample, the sample must be: Ans: The
appropriate size and random
Not selecting a random sample is what type of bias? Ans: Measurement
Not selecting a right sized sample is what type of bias? Ans:
Measurement
Research best practices eliminate... Ans: Bias
Outliers create this type of error Ans: Out-of Range
, Page | 2
Unpredictable error Ans: Random Error - No correlation
Error may occur from missing data. (Example: Space not filled in) Ans:
Omission Error - Distorted results
This error repeats itself Ans: Systematic Error - Skewed results
Observation points that are distant from other observations. Ans:
Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample Ans:
Measurement bias
Types of Bias: Bias introduced because respondents believe it will be
beneficial if selected. Ans: Conscious bias (key word: benefit)
Consistent and repeatable data Ans: Reliable
Resulting from accurate measurements Ans: Valid data
If a responder lies on their survey, this creates what type of bias? Ans:
Information
Sorting your spreadsheet can expose these errors by moving them to the
very top or the very bottom of the column Ans: Omission or Out-of-
Range
An error that will fix itself over time Ans: Random
An error that will not fix itself. You must do something Ans: Systematic
Cleaning and organizing data Ans: Data Management
Are the following variable quantitative or qualitative? Personality type,
social class, or communication style Ans: Qualitative
A study used when you a conditions can't be controlled Ans:
Observational study
, Page | 3
Observes people going forward in time from the time of their entry into
the study. Ans: Cohort Study
What are the three elements of an experimental study? Ans: Unit,
Treatment, Response
Accurately measures what it is intended to measure Ans: Valid data
________ an experimental study prevents bias. Ans: Blinding
Neither the treatment allocator nor the participant knows in which group
the participant is contributing. (Who is getting the real drug?) Ans:
Double blind study
The participants are not told if they are in the treatment group or control
group Ans: Blind study
Describes characteristics of a dataset. Mean, median, mode, variation,
standard deviation, range.... Ans: Descriptive analytics
Uses data from t he past to predict the future Ans: Predictive
Uses experimental design and optimization to predict a future Ans:
Prescriptive
If we move to six appointments an hour we can increase revenue 2%.
Which form of analytics is this? Ans: Prescriptive - We are taking a
specific course of action
Based on the last four quarters, we can predict $4,1 million in sales next
quarter. Which form of analytics is this? Ans: Predictive: We aren't
taking any action
The number of appointments per day averaged 7 over the last 6 months.
Which form of analytics is this? Ans: Descriptive: We are only describing
the past. No future predictions are made.
Is Big Data structured, unstructured or both? Ans: Both
Where do we store big data Ans: In a big data warehouse
