WGU C207 OA Data-Driven Decision Making Exam
Questions and Answers (2022/2023) (Verified Answers)
Prescriptive
Analytics is a broad term that refers to a variety of tools that inform managerial
decisions. Which term can be used to describe managerial decisions?
Relatively lower cost of computer storage & Higher computer processing power
What are two reasons for the increasing use of analytics in organizational decision-
making?
By quantifying risk
How does probability theory inform decision-making for managers?
Ordinal Data
Which type of data are the Olympic medals of gold, silver, and bronze examples of?
It reduces the amount of incomplete data & It cleans data
What are two aspects of data quality management?
Missing Data & Misspelled data
Which two attributes indicate potential data quality issues when evaluating a set of
nominal data?
Systematic Error
When conducting a study that measures an individual's weight, all scales are calibrated
prior to use in measurement. Which type of error should this procedure significantly
reduce?
Response Variable
An advertising manager creates a research study by presenting low, medium, or high
frequency of the same ad in matched markets. The manager then reports on sales in
each market location. What is the term for the different sales in this study?
Cohort Study
A healthcare study follows a particular sample over time to identify how the health
habits of teenagers impact their likelihood of acquiring various diseases later in their life.
The healthcare organization hopes this data will allow them to create early prevention
programs. Which type of research design does this study describe?
Systematic Error & Omission Error
Several missing values in a particular field in a dataset were observed. The likelihood of
a record having a missing value is correlated to another variable in the dataset. Which
two types of error might be introduced into the dataset if the removed record included
missing values?
Number of purchases per email and Spending per purchase
A company is trying to increase its online sales revenue by improving its email
advertising campaign for repeat customers as well as new customers. Which two
variables would be used in determining a campaign to maximize revenue gain?
Linear Programming
A company that raises turkeys is hoping to increase the rate of growth of the turkeys
while controlling the cost of feeding them. It has determined that feeds containing both
nutrients and protein can be used. Which decision-making technique is most
appropriate for this company to minimize the cost of feeding the birds?
, ANOVA
Compare outcomes of different drug testing results
Correlation
Understand effective marketing to spend advertising dollars efficiently
Control Charts
Monitor production process
Confusion of association and causality
A researcher concludes that bananas create healthy children because the researcher's
notes indicate that children who eat a banana every day are healthy. Which misuse of
statistics would this study be an example of if these children also eat a balanced diet
and exercise daily?
Does a causal relationship truly exist?
In the month of December, there is a strong positive correlation between airline ticket
sales and retail sales. Which question should the researcher consider before concluding
that the correlation statistic implies that airline sales drive retail sales?
Intersection & Multiplication Principle
A medical care provider determines the probability that a patient needs treatment for a
broken bone, the probability that a patient needs treatment for a concussion, and the
probability that a patient needs treatment for both a broken bone and a concussion.
Which two techniques apply in finding the probability that a patient needs treatment for
a broken bone and a concussion?
Bayes' Theorem
A hardware store has found that there is a 0.25 probability that a customer buys an
electrical product, a 0.45 probability that a customer buys a plumbing product, and a
0.10 probability that a customer buys an electrical product if they purchase a plumbing
product. Which statistical rule can be used to determine the probability that a customer
buys a plumbing product given that this customer has purchased an electrical product?
12
Given the following data set: 9, 12, 14, 10, 8, 11, 12 What is the mode?
Scatterplot
Which graphical tool is used to illustrate a possible relationship or correlation between
two variables?
The data point is two standard deviations less than the mean of the data set.
What does it mean when an individual data point has a z-score of -2?
The advertisement was effective in building brand awareness.
A research study examined the impact of product advertisement exposure on that
product's brand awareness. The appropriate statistical test indicates that the null
hypothesis should be rejected at the 5% significance level. What can be concluded from
this study?
Median
A manager analyzes a data set that includes information on individual incomes. The
manager knows that the data set is fairly representative of the general population and
includes several millionaires. Based on this data set, which measure of central tendency
best represents the middle of the distribution?
Standard Deviation
Questions and Answers (2022/2023) (Verified Answers)
Prescriptive
Analytics is a broad term that refers to a variety of tools that inform managerial
decisions. Which term can be used to describe managerial decisions?
Relatively lower cost of computer storage & Higher computer processing power
What are two reasons for the increasing use of analytics in organizational decision-
making?
By quantifying risk
How does probability theory inform decision-making for managers?
Ordinal Data
Which type of data are the Olympic medals of gold, silver, and bronze examples of?
It reduces the amount of incomplete data & It cleans data
What are two aspects of data quality management?
Missing Data & Misspelled data
Which two attributes indicate potential data quality issues when evaluating a set of
nominal data?
Systematic Error
When conducting a study that measures an individual's weight, all scales are calibrated
prior to use in measurement. Which type of error should this procedure significantly
reduce?
Response Variable
An advertising manager creates a research study by presenting low, medium, or high
frequency of the same ad in matched markets. The manager then reports on sales in
each market location. What is the term for the different sales in this study?
Cohort Study
A healthcare study follows a particular sample over time to identify how the health
habits of teenagers impact their likelihood of acquiring various diseases later in their life.
The healthcare organization hopes this data will allow them to create early prevention
programs. Which type of research design does this study describe?
Systematic Error & Omission Error
Several missing values in a particular field in a dataset were observed. The likelihood of
a record having a missing value is correlated to another variable in the dataset. Which
two types of error might be introduced into the dataset if the removed record included
missing values?
Number of purchases per email and Spending per purchase
A company is trying to increase its online sales revenue by improving its email
advertising campaign for repeat customers as well as new customers. Which two
variables would be used in determining a campaign to maximize revenue gain?
Linear Programming
A company that raises turkeys is hoping to increase the rate of growth of the turkeys
while controlling the cost of feeding them. It has determined that feeds containing both
nutrients and protein can be used. Which decision-making technique is most
appropriate for this company to minimize the cost of feeding the birds?
, ANOVA
Compare outcomes of different drug testing results
Correlation
Understand effective marketing to spend advertising dollars efficiently
Control Charts
Monitor production process
Confusion of association and causality
A researcher concludes that bananas create healthy children because the researcher's
notes indicate that children who eat a banana every day are healthy. Which misuse of
statistics would this study be an example of if these children also eat a balanced diet
and exercise daily?
Does a causal relationship truly exist?
In the month of December, there is a strong positive correlation between airline ticket
sales and retail sales. Which question should the researcher consider before concluding
that the correlation statistic implies that airline sales drive retail sales?
Intersection & Multiplication Principle
A medical care provider determines the probability that a patient needs treatment for a
broken bone, the probability that a patient needs treatment for a concussion, and the
probability that a patient needs treatment for both a broken bone and a concussion.
Which two techniques apply in finding the probability that a patient needs treatment for
a broken bone and a concussion?
Bayes' Theorem
A hardware store has found that there is a 0.25 probability that a customer buys an
electrical product, a 0.45 probability that a customer buys a plumbing product, and a
0.10 probability that a customer buys an electrical product if they purchase a plumbing
product. Which statistical rule can be used to determine the probability that a customer
buys a plumbing product given that this customer has purchased an electrical product?
12
Given the following data set: 9, 12, 14, 10, 8, 11, 12 What is the mode?
Scatterplot
Which graphical tool is used to illustrate a possible relationship or correlation between
two variables?
The data point is two standard deviations less than the mean of the data set.
What does it mean when an individual data point has a z-score of -2?
The advertisement was effective in building brand awareness.
A research study examined the impact of product advertisement exposure on that
product's brand awareness. The appropriate statistical test indicates that the null
hypothesis should be rejected at the 5% significance level. What can be concluded from
this study?
Median
A manager analyzes a data set that includes information on individual incomes. The
manager knows that the data set is fairly representative of the general population and
includes several millionaires. Based on this data set, which measure of central tendency
best represents the middle of the distribution?
Standard Deviation
