1
WGU C207 DTA DRIVEN DECISION MAKING EXAM NEWEST
VERSION -2025/2026- 100+ QUESTIONS AND VERIFIED
ANSWERS 100% CORRECT GUARANTEED SUCCESS
What are the two major issues surrounding research standards?
Best practices and ethics
In order to be a statistically valid sample, the sample must be:
The appropriate size and random
Not selecting a random sample is what type of bias?
Measurement
What is a key reason we study statistics?
To make informed decisions
Visually presenting the data assists in which stage of the Davenport-Kim model?
Communicating the results
When does research fail to produce reliable results?
Poor research validity
Not selecting a right sized sample is what type of bias?
Measurement
Based on the last four quarters, we can predict $4,1 million in sales next quarter.
Which form of analytics is this?
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?
Descriptive: We are only describing the past. No future predictions are made.
, 2
Is Big Data structured, unstructured or both?
Both
Where do we store big data
In a big data warehouse
Why do marketing teams use big data?
"Datamining" assists in targeting the best customers for new products or reaching
existing customers for like products
Name the 4 levels of measurement
(NOIR) Nominal, Ordinal, Interval Ratio
Continuous data with unique zero point is _______ level of measurement.
Ratio
Orders data at equal distance apart is _______ level of measurement.
Interval
Identify, Group, or Categorize is _______ level of measurement.
Nominal
The colors of cars is which level of measurement?
Nominal
Research best practices eliminate...
Bias
Outliers create this type of error
Out-of Range
Unpredictable error
Random Error - No correlation
, 3
Error may occur from missing data. (Example: Space not filled in)
Omission Error - Distorted results
This error repeats itself
Systematic Error - Skewed results
Observation points that are distant from other observations.
Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample
Measurement bias
Types of Bias: Bias introduced because respondents believe it will be beneficial if
selected.
Conscious bias (key word: benefit)
Consistent and repeatable data
Reliable
Resulting from accurate measurements
Valid data
If a responder lies on their survey, this creates what type of bias?
Information
Sorting your spreadsheet can expose these errors by moving them to the very top
or the very bottom of the column
Omission or Out-of-Range
An error that will fix itself over time
Random
An error that will not fix itself. You must do something
Systematic
WGU C207 DTA DRIVEN DECISION MAKING EXAM NEWEST
VERSION -2025/2026- 100+ QUESTIONS AND VERIFIED
ANSWERS 100% CORRECT GUARANTEED SUCCESS
What are the two major issues surrounding research standards?
Best practices and ethics
In order to be a statistically valid sample, the sample must be:
The appropriate size and random
Not selecting a random sample is what type of bias?
Measurement
What is a key reason we study statistics?
To make informed decisions
Visually presenting the data assists in which stage of the Davenport-Kim model?
Communicating the results
When does research fail to produce reliable results?
Poor research validity
Not selecting a right sized sample is what type of bias?
Measurement
Based on the last four quarters, we can predict $4,1 million in sales next quarter.
Which form of analytics is this?
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?
Descriptive: We are only describing the past. No future predictions are made.
, 2
Is Big Data structured, unstructured or both?
Both
Where do we store big data
In a big data warehouse
Why do marketing teams use big data?
"Datamining" assists in targeting the best customers for new products or reaching
existing customers for like products
Name the 4 levels of measurement
(NOIR) Nominal, Ordinal, Interval Ratio
Continuous data with unique zero point is _______ level of measurement.
Ratio
Orders data at equal distance apart is _______ level of measurement.
Interval
Identify, Group, or Categorize is _______ level of measurement.
Nominal
The colors of cars is which level of measurement?
Nominal
Research best practices eliminate...
Bias
Outliers create this type of error
Out-of Range
Unpredictable error
Random Error - No correlation
, 3
Error may occur from missing data. (Example: Space not filled in)
Omission Error - Distorted results
This error repeats itself
Systematic Error - Skewed results
Observation points that are distant from other observations.
Outliers Note: Can be included or excluded in analysis (causes skewness)
Types of Bias: Bias that occurs from not selecting a random sample
Measurement bias
Types of Bias: Bias introduced because respondents believe it will be beneficial if
selected.
Conscious bias (key word: benefit)
Consistent and repeatable data
Reliable
Resulting from accurate measurements
Valid data
If a responder lies on their survey, this creates what type of bias?
Information
Sorting your spreadsheet can expose these errors by moving them to the very top
or the very bottom of the column
Omission or Out-of-Range
An error that will fix itself over time
Random
An error that will not fix itself. You must do something
Systematic
