WGU C207 DATA DRIVEN
DECISION MAKING EXAM WITH
QUESTIONS AND VERIFIED
ANSWERS.
Frame the Problem, Solving the Problem and Communicating Results are part of
which decision making model? - ANSWER Davenport-Kim three-stage model
In which stage of the Davenport-Kim model is problem recognition? - ANSWER
Framing the problem
In which stage of the Davenport-Kim model is data collection? - ANSWER Solving
the problem
What is a key reason we study statistics? - ANSWER To make informed decisions
Visually presenting the data assists in which stage of the Davenport-Kim model? -
ANSWER Communicating the results
When does research fail to produce reliable results? - ANSWER Poor research
validity
What are the two major issues surrounding research standards? - ANSWER Best
practices and ethics
In order to be a statistically valid sample, the sample must be: - ANSWER The
appropriate size and random
Not selecting a random sample is what type of bias? - ANSWER Measurement
Not selecting a right sized sample is what type of bias? - ANSWER Measurement
Research best practices eliminate... - ANSWER Bias
Outliers create this type of error - ANSWER Out-of Range
Unpredictable error - ANSWER Random Error - No correlation
Error may occur from missing data. (Example: Space not filled in) - ANSWER
Omission Error - Distorted results
This error repeats itself - ANSWER Systematic Error - Skewed results
Observation points that are distant from other observations. - ANSWER Outliers
Note: Can be included or excluded in analysis (causes skewness)
, WGU C207 DATA DRIVEN
DECISION MAKING EXAM WITH
QUESTIONS AND VERIFIED
ANSWERS.
Types of Bias: Bias that occurs from not selecting a random sample - ANSWER
Measurement bias
Types of Bias: Bias introduced because respondents believe it will be beneficial if
selected. - ANSWER Conscious bias (key word: benefit)
Consistent and repeatable data - ANSWER Reliable
Resulting from accurate measurements - ANSWER Valid data
If a responder lies on their survey, this creates what type of bias? - ANSWER
Information
Sorting your spreadsheet can expose these errors by moving them to the very top or
the very bottom of the column - ANSWER Omission or Out-of-Range
An error that will fix itself over time - ANSWER Random
An error that will not fix itself. You must do something - ANSWER Systematic
Cleaning and organizing data - ANSWER Data Management
Are the following variable quantitative or qualitative? Personality type, social class,
or communication style - ANSWER Qualitative
A study used when you a conditions can't be controlled - ANSWER Observational
study
Observes people going forward in time from the time of their entry into the study. -
ANSWER Cohort Study
What are the three elements of an experimental study? - ANSWER Unit,
Treatment, Response
Accurately measures what it is intended to measure - ANSWER Valid data
________ an experimental study prevents bias. - ANSWER Blinding
Neither the treatment allocator nor the participant knows in which group the
participant is contributing. (Who is getting the real drug?) - ANSWER Double blind
study
DECISION MAKING EXAM WITH
QUESTIONS AND VERIFIED
ANSWERS.
Frame the Problem, Solving the Problem and Communicating Results are part of
which decision making model? - ANSWER Davenport-Kim three-stage model
In which stage of the Davenport-Kim model is problem recognition? - ANSWER
Framing the problem
In which stage of the Davenport-Kim model is data collection? - ANSWER Solving
the problem
What is a key reason we study statistics? - ANSWER To make informed decisions
Visually presenting the data assists in which stage of the Davenport-Kim model? -
ANSWER Communicating the results
When does research fail to produce reliable results? - ANSWER Poor research
validity
What are the two major issues surrounding research standards? - ANSWER Best
practices and ethics
In order to be a statistically valid sample, the sample must be: - ANSWER The
appropriate size and random
Not selecting a random sample is what type of bias? - ANSWER Measurement
Not selecting a right sized sample is what type of bias? - ANSWER Measurement
Research best practices eliminate... - ANSWER Bias
Outliers create this type of error - ANSWER Out-of Range
Unpredictable error - ANSWER Random Error - No correlation
Error may occur from missing data. (Example: Space not filled in) - ANSWER
Omission Error - Distorted results
This error repeats itself - ANSWER Systematic Error - Skewed results
Observation points that are distant from other observations. - ANSWER Outliers
Note: Can be included or excluded in analysis (causes skewness)
, WGU C207 DATA DRIVEN
DECISION MAKING EXAM WITH
QUESTIONS AND VERIFIED
ANSWERS.
Types of Bias: Bias that occurs from not selecting a random sample - ANSWER
Measurement bias
Types of Bias: Bias introduced because respondents believe it will be beneficial if
selected. - ANSWER Conscious bias (key word: benefit)
Consistent and repeatable data - ANSWER Reliable
Resulting from accurate measurements - ANSWER Valid data
If a responder lies on their survey, this creates what type of bias? - ANSWER
Information
Sorting your spreadsheet can expose these errors by moving them to the very top or
the very bottom of the column - ANSWER Omission or Out-of-Range
An error that will fix itself over time - ANSWER Random
An error that will not fix itself. You must do something - ANSWER Systematic
Cleaning and organizing data - ANSWER Data Management
Are the following variable quantitative or qualitative? Personality type, social class,
or communication style - ANSWER Qualitative
A study used when you a conditions can't be controlled - ANSWER Observational
study
Observes people going forward in time from the time of their entry into the study. -
ANSWER Cohort Study
What are the three elements of an experimental study? - ANSWER Unit,
Treatment, Response
Accurately measures what it is intended to measure - ANSWER Valid data
________ an experimental study prevents bias. - ANSWER Blinding
Neither the treatment allocator nor the participant knows in which group the
participant is contributing. (Who is getting the real drug?) - ANSWER Double blind
study
