WGU C207 OA Data Driven Decision Making
Latest EXAM NEW 2026 (Complied FROM
REAL EXAM) 100%|SOLVED
Neither the treatment allocator nor the participant knows in which group the
participant is contributing. (Who is getting the real drug?)
Double blind study
The participants are not told if they are in the treatment group or control group
Blind study
Describes characteristics of a dataset. Mean, median, mode, variation, standard
deviation, range....
Descriptive analytics
Uses data from t he past to predict the future
Predictive
Uses experimental design and optimization to predict a future
Prescriptive
If we move to six appointments an hour we can increase revenue 2%. Which form of
analytics is this?
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?
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.
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
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
Cleaning and organizing data
Data Management
Are the following variable quantitative or qualitative? Personality type, social class, or
communication style
Qualitative
A study used when you a conditions can't be controlled
Observational study
Observes people going forward in time from the time of their entry into the study.
Cohort Study
What are the three elements of an experimental study?
Unit, Treatment, Response
Accurately measures what it is intended to measure
Latest EXAM NEW 2026 (Complied FROM
REAL EXAM) 100%|SOLVED
Neither the treatment allocator nor the participant knows in which group the
participant is contributing. (Who is getting the real drug?)
Double blind study
The participants are not told if they are in the treatment group or control group
Blind study
Describes characteristics of a dataset. Mean, median, mode, variation, standard
deviation, range....
Descriptive analytics
Uses data from t he past to predict the future
Predictive
Uses experimental design and optimization to predict a future
Prescriptive
If we move to six appointments an hour we can increase revenue 2%. Which form of
analytics is this?
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?
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.
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
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
Cleaning and organizing data
Data Management
Are the following variable quantitative or qualitative? Personality type, social class, or
communication style
Qualitative
A study used when you a conditions can't be controlled
Observational study
Observes people going forward in time from the time of their entry into the study.
Cohort Study
What are the three elements of an experimental study?
Unit, Treatment, Response
Accurately measures what it is intended to measure
