WGU C207 DATA DRIVEN
DECISION MAKING FINAL REAL
EXAM QUESTIONS AND
CORRECT
What are two reasons for the increasing use of analytics in organizational decision-
making?Choose 2 answers.
Relatively lower cost of computer storage
Lower availability of statistical experts
Higher cost of obtaining data
Higher computer processing power - ANSWER- Relatively lower cost of computer
storage
Higher computer processing power
How does probability theory inform decision-making for managers?
By quantifying risk
By quantifying data
By quantifying quality
By quantifying costs - ANSWER- By quantifying risk
Which type of data are the Olympic medals of gold, silver, and bronze examples of?
Nominal data
Ordinal data
Interval data
Ratio data - ANSWER- Ordinal data
What are two aspects of data quality management?Choose 2 answers.
It calculates spurious data.
It reduces the amount of incomplete data.
It monitors data input rates.
,It cleans data. - ANSWER- It cleans data.
Which two attributes indicate potential data quality issues when evaluating a set of
nominal data?Choose 2 answers.
Outlier data
Missing data
Out-of-range data
Misspelled data - ANSWER- Misspelled data
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?
Systematic error
Omission error
Random error
Information error - ANSWER- Systematic error
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?
Experimental unit
Treatment
Response variable
Intervention - ANSWER- Response variable
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?
Double-blind study
Systematic study
Cohort study
Experimental study - ANSWER- Cohort study
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?Choose 2 answers.
Systematic error
,Omission error
Random error
Typographical error - ANSWER- Systematic error
Omission error
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?Choose
2 answers.
Number of purchases per email
E-mail content
Spending per purchase
Cost per email - ANSWER- Number of purchases per email
Spending per purchase
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?
Correlation
Linear programming
Chi-square
Z-score - ANSWER- Linear programming
Match each action with the appropriate statistical procedure.Answer options may be
used more than once or not at all.
Compare outcomes of different drug testing results
Understand effective marketing to spend advertising dollars efficiently
Monitor production process - ANSWER- ANOVA
Correlation
Control charts
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?
Unfounded assumptions
, Lack of blinding
Faulty operationalization
Confusion of association and causality - ANSWER- Confusion of association and
causality
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?
Does a causal relationship truly exist?
Are the data biased?
Is the sample size large enough?
Does the sample accurately reflect the population? - ANSWER- Does a causal
relationship truly exist?
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?Choose 2 answers.
Intersection
Union
Multiplication principle
Mutually exclusive - ANSWER- Intersection
Multiplication principle
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?
Bayes' theorem
Multiplication
Combination
Conditional probability - ANSWER- Bayes' theorem
Given the following data set:
9, 12, 14, 10, 8, 11, 12
What is the mode?
8
DECISION MAKING FINAL REAL
EXAM QUESTIONS AND
CORRECT
What are two reasons for the increasing use of analytics in organizational decision-
making?Choose 2 answers.
Relatively lower cost of computer storage
Lower availability of statistical experts
Higher cost of obtaining data
Higher computer processing power - ANSWER- Relatively lower cost of computer
storage
Higher computer processing power
How does probability theory inform decision-making for managers?
By quantifying risk
By quantifying data
By quantifying quality
By quantifying costs - ANSWER- By quantifying risk
Which type of data are the Olympic medals of gold, silver, and bronze examples of?
Nominal data
Ordinal data
Interval data
Ratio data - ANSWER- Ordinal data
What are two aspects of data quality management?Choose 2 answers.
It calculates spurious data.
It reduces the amount of incomplete data.
It monitors data input rates.
,It cleans data. - ANSWER- It cleans data.
Which two attributes indicate potential data quality issues when evaluating a set of
nominal data?Choose 2 answers.
Outlier data
Missing data
Out-of-range data
Misspelled data - ANSWER- Misspelled data
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?
Systematic error
Omission error
Random error
Information error - ANSWER- Systematic error
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?
Experimental unit
Treatment
Response variable
Intervention - ANSWER- Response variable
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?
Double-blind study
Systematic study
Cohort study
Experimental study - ANSWER- Cohort study
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?Choose 2 answers.
Systematic error
,Omission error
Random error
Typographical error - ANSWER- Systematic error
Omission error
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?Choose
2 answers.
Number of purchases per email
E-mail content
Spending per purchase
Cost per email - ANSWER- Number of purchases per email
Spending per purchase
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?
Correlation
Linear programming
Chi-square
Z-score - ANSWER- Linear programming
Match each action with the appropriate statistical procedure.Answer options may be
used more than once or not at all.
Compare outcomes of different drug testing results
Understand effective marketing to spend advertising dollars efficiently
Monitor production process - ANSWER- ANOVA
Correlation
Control charts
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?
Unfounded assumptions
, Lack of blinding
Faulty operationalization
Confusion of association and causality - ANSWER- Confusion of association and
causality
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?
Does a causal relationship truly exist?
Are the data biased?
Is the sample size large enough?
Does the sample accurately reflect the population? - ANSWER- Does a causal
relationship truly exist?
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?Choose 2 answers.
Intersection
Union
Multiplication principle
Mutually exclusive - ANSWER- Intersection
Multiplication principle
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?
Bayes' theorem
Multiplication
Combination
Conditional probability - ANSWER- Bayes' theorem
Given the following data set:
9, 12, 14, 10, 8, 11, 12
What is the mode?
8
