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WGU C207 Data Driven Decision Making -
Data Driven Express Cohort
Frame the Problem, Solving the Problem and Communicating Results are part of which
decision making model? - CORRECT ANSWER-Davenport-Kim three-stage model
In which stage of the Davenport-Kim model is problem recognition? - CORRECT
ANSWER-Framing the problem
In which stage of the Davenport-Kim model is data collection? - CORRECT
ANSWER-Solving the problem
What is a key reason we study statistics? - CORRECT ANSWER-To make informed
decisions
Visually presenting the data assists in which stage of the Davenport-Kim model? -
CORRECT ANSWER-Communicating the results
When does research fail to produce reliable results? - CORRECT ANSWER-Poor
research validity
What are the two major issues surrounding research standards? - CORRECT
ANSWER-Best practices and ethics
In order to be a statistically valid sample, the sample must be: - CORRECT
ANSWER-The appropriate size and random
Not selecting a random sample is what type of bias? - CORRECT
ANSWER-Measurement
Not selecting a right sized sample is what type of bias? - CORRECT
ANSWER-Measurement
Research best practices eliminate... - CORRECT ANSWER-Bias
Outliers create this type of error - CORRECT ANSWER-Out-of Range
Unpredictable error - CORRECT ANSWER-Random Error - No correlation
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Error may occur from missing data. (Example: Space not filled in) - CORRECT
ANSWER-Omission Error - Distorted results
This error repeats itself - CORRECT ANSWER-Systematic Error - Skewed results
Observation points that are distant from other observations. - CORRECT
ANSWER-Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample - CORRECT
ANSWER-Measurement bias
Types of Bias: Bias introduced because respondents believe it will be beneficial if
selected. - CORRECT ANSWER-Conscious bias (key word: benefit)
Consistent and repeatable data - CORRECT ANSWER-Reliable
Resulting from accurate measurements - CORRECT ANSWER-Valid data
If a responder lies on their survey, this creates what type of bias? - CORRECT
ANSWER-Information
Sorting your spreadsheet can expose these errors by moving them to the very top or the
very bottom of the column - CORRECT ANSWER-Omission or Out-of-Range
An error that will fix itself over time - CORRECT ANSWER-Random
An error that will not fix itself. You must do something - CORRECT
ANSWER-Systematic
Cleaning and organizing data - CORRECT ANSWER-Data Management
Are the following variable quantitative or qualitative? Personality type, social class, or
communication style - CORRECT ANSWER-Qualitative
A study used when you a conditions can't be controlled - CORRECT
ANSWER-Observational study
Observes people going forward in time from the time of their entry into the study. -
CORRECT ANSWER-Cohort Study
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What are the three elements of an experimental study? - CORRECT ANSWER-Unit,
Treatment, Response
Accurately measures what it is intended to measure - CORRECT ANSWER-Valid data
________ an experimental study prevents bias. - CORRECT ANSWER-Blinding
Neither the treatment allocator nor the participant knows in which group the participant
is contributing. (Who is getting the real drug?) - CORRECT ANSWER-Double blind
study
The participants are not told if they are in the treatment group or control group -
CORRECT ANSWER-Blind study
Describes characteristics of a dataset. Mean, median, mode, variation, standard
deviation, range.... - CORRECT ANSWER-Descriptive analytics
Uses data from t he past to predict the future - CORRECT ANSWER-Predictive
Uses experimental design and optimization to predict a future - CORRECT
ANSWER-Prescriptive
If we move to six appointments an hour we can increase revenue 2%. Which form of
analytics is this? - CORRECT ANSWER-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? - CORRECT ANSWER-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? - CORRECT ANSWER-Descriptive: We are only describing the past.
No future predictions are made.
Is Big Data structured, unstructured or both? - CORRECT ANSWER-Both
Where do we store big data - CORRECT ANSWER-In a big data warehouse
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Why do marketing teams use big data? - CORRECT ANSWER-"Datamining" assists in
targeting the best customers for new products or reaching existing customers for like
products
Name the 4 levels of measurement - CORRECT ANSWER-(NOIR) Nominal, Ordinal,
Interval Ratio
Continuous data with unique zero point is _______ level of measurement. - CORRECT
ANSWER-Ratio
Orders data at equal distance apart is _______ level of measurement. - CORRECT
ANSWER-Interval
Identify, Group, or Categorize is _______ level of measurement. - CORRECT
ANSWER-Nominal
The colors of cars is which level of measurement? - CORRECT ANSWER-Nominal
The price of the car is which level of measurement? - CORRECT ANSWER-Ratio
Which level of measurement can be multiplied and divided? - CORRECT
ANSWER-Ratio
Which level of measurement cannot be analyzed which most statistical test? -
CORRECT ANSWER-Nominal
Correlation is not _________ - CORRECT ANSWER-Causation
A good sample of the population being studied will be the right size and ___________ -
CORRECT ANSWER-Random
If a sample is not random it creates ____________ - CORRECT
ANSWER-Measurement Bias
If a sample is not the right size it creates ___________ - CORRECT
ANSWER-Measurement Bias
Measuring the housing market in North Carolina when making an inference about the
entire East coast is an example of __________ - CORRECT
ANSWER-Non-representative Sample
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WGU C207 Data Driven Decision Making -
Data Driven Express Cohort
Frame the Problem, Solving the Problem and Communicating Results are part of which
decision making model? - CORRECT ANSWER-Davenport-Kim three-stage model
In which stage of the Davenport-Kim model is problem recognition? - CORRECT
ANSWER-Framing the problem
In which stage of the Davenport-Kim model is data collection? - CORRECT
ANSWER-Solving the problem
What is a key reason we study statistics? - CORRECT ANSWER-To make informed
decisions
Visually presenting the data assists in which stage of the Davenport-Kim model? -
CORRECT ANSWER-Communicating the results
When does research fail to produce reliable results? - CORRECT ANSWER-Poor
research validity
What are the two major issues surrounding research standards? - CORRECT
ANSWER-Best practices and ethics
In order to be a statistically valid sample, the sample must be: - CORRECT
ANSWER-The appropriate size and random
Not selecting a random sample is what type of bias? - CORRECT
ANSWER-Measurement
Not selecting a right sized sample is what type of bias? - CORRECT
ANSWER-Measurement
Research best practices eliminate... - CORRECT ANSWER-Bias
Outliers create this type of error - CORRECT ANSWER-Out-of Range
Unpredictable error - CORRECT ANSWER-Random Error - No correlation
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Error may occur from missing data. (Example: Space not filled in) - CORRECT
ANSWER-Omission Error - Distorted results
This error repeats itself - CORRECT ANSWER-Systematic Error - Skewed results
Observation points that are distant from other observations. - CORRECT
ANSWER-Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample - CORRECT
ANSWER-Measurement bias
Types of Bias: Bias introduced because respondents believe it will be beneficial if
selected. - CORRECT ANSWER-Conscious bias (key word: benefit)
Consistent and repeatable data - CORRECT ANSWER-Reliable
Resulting from accurate measurements - CORRECT ANSWER-Valid data
If a responder lies on their survey, this creates what type of bias? - CORRECT
ANSWER-Information
Sorting your spreadsheet can expose these errors by moving them to the very top or the
very bottom of the column - CORRECT ANSWER-Omission or Out-of-Range
An error that will fix itself over time - CORRECT ANSWER-Random
An error that will not fix itself. You must do something - CORRECT
ANSWER-Systematic
Cleaning and organizing data - CORRECT ANSWER-Data Management
Are the following variable quantitative or qualitative? Personality type, social class, or
communication style - CORRECT ANSWER-Qualitative
A study used when you a conditions can't be controlled - CORRECT
ANSWER-Observational study
Observes people going forward in time from the time of their entry into the study. -
CORRECT ANSWER-Cohort Study
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What are the three elements of an experimental study? - CORRECT ANSWER-Unit,
Treatment, Response
Accurately measures what it is intended to measure - CORRECT ANSWER-Valid data
________ an experimental study prevents bias. - CORRECT ANSWER-Blinding
Neither the treatment allocator nor the participant knows in which group the participant
is contributing. (Who is getting the real drug?) - CORRECT ANSWER-Double blind
study
The participants are not told if they are in the treatment group or control group -
CORRECT ANSWER-Blind study
Describes characteristics of a dataset. Mean, median, mode, variation, standard
deviation, range.... - CORRECT ANSWER-Descriptive analytics
Uses data from t he past to predict the future - CORRECT ANSWER-Predictive
Uses experimental design and optimization to predict a future - CORRECT
ANSWER-Prescriptive
If we move to six appointments an hour we can increase revenue 2%. Which form of
analytics is this? - CORRECT ANSWER-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? - CORRECT ANSWER-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? - CORRECT ANSWER-Descriptive: We are only describing the past.
No future predictions are made.
Is Big Data structured, unstructured or both? - CORRECT ANSWER-Both
Where do we store big data - CORRECT ANSWER-In a big data warehouse
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Why do marketing teams use big data? - CORRECT ANSWER-"Datamining" assists in
targeting the best customers for new products or reaching existing customers for like
products
Name the 4 levels of measurement - CORRECT ANSWER-(NOIR) Nominal, Ordinal,
Interval Ratio
Continuous data with unique zero point is _______ level of measurement. - CORRECT
ANSWER-Ratio
Orders data at equal distance apart is _______ level of measurement. - CORRECT
ANSWER-Interval
Identify, Group, or Categorize is _______ level of measurement. - CORRECT
ANSWER-Nominal
The colors of cars is which level of measurement? - CORRECT ANSWER-Nominal
The price of the car is which level of measurement? - CORRECT ANSWER-Ratio
Which level of measurement can be multiplied and divided? - CORRECT
ANSWER-Ratio
Which level of measurement cannot be analyzed which most statistical test? -
CORRECT ANSWER-Nominal
Correlation is not _________ - CORRECT ANSWER-Causation
A good sample of the population being studied will be the right size and ___________ -
CORRECT ANSWER-Random
If a sample is not random it creates ____________ - CORRECT
ANSWER-Measurement Bias
If a sample is not the right size it creates ___________ - CORRECT
ANSWER-Measurement Bias
Measuring the housing market in North Carolina when making an inference about the
entire East coast is an example of __________ - CORRECT
ANSWER-Non-representative Sample
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