WGU C207 PA| 70 questions| with correct answers latest
update
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? - correct answer Prescriptive
What are two reasons for the increasing use of analytics in organizational decision-making? - correct answer
Relatively lower cost of computer storage; Higher computer processing power
How does probability theory inform decision-making for managers? - correct answerBy quantifying risk
Which type of data are the Olympic medals of gold, silver, and bronze examples of? - correct answerOrdinal
data
What are two aspects of data quality management? - correct answerIt reduces the amount of incomplete data.;
It cleans data.
Which two attributes indicate potential data quality issues when evaluating a set of nominal data? - correct
answerMissing data; 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? - correct answersystematic
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? - correct answerresponse 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? -
correct answerCohort 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? - correct answerSystematic and 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? - correct answerNumber 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? -
correct answerLinear Programming
Compare outcomes of different drug testing results - correct answerANOVA
Understand effective marketing to spend advertising dollars efficiently - correct answerCorrelation
Monitor production process - correct answerControl 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 - correct answerConfusion 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? - correct answerDoes 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? - correct answerIntersection; 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? - correct
answerBayes' Theorem
Given the following data set:9, 12, 14, 10, 8, 11, 12What is the mode? - correct answer12
Which graphical tool is used to illustrate a possible relationship or correlation between two variables? - correct
answerScatterplot
What does it mean when an individual data point has a z-score of -2? - correct answerThe data point is two
standard deviations less than the mean of the data set.
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? - correct answerThe advertisement was effective in building
brand awareness.
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? - correct answerMedian
After evaluating manufacturing times for a particular product, a manager determines that the times are spread
out across the distribution. The manager has been asked to determine how far, on average, the time is from the
mean.Which statistic roughly measures the average distance of a data point from the mean of the distribution?
- correct answerStandard deviation
The number of customers that an automobile service shop receives on any given day is normally distributed
with a mean of 75 and a standard deviation of 25. On a given day, 125 oil changes are performed.What is the
probability on a given day of 125 or fewer oil changes performed? - correct answer97.7%
A nonprofit organization ran an email campaign with three different messages to solicit additional
donations.What should the nonprofit organization use to determine if the average donation differs for the
different messages? - correct answerANOVA
A manager of a call center is in charge of creating a staffing plan. The number of calls received per day is
normally distributed.Which two statistics would be needed to estimate the number of calls that would be
received 95% of the time? - correct answerStandard deviation and mean
A manager uses a linear regression to examine how the store's retail sales are predicted by advertising
expenditures.Which type of variable do retail sales represent in this regression? - correct answerDependent
variable
An analyst used multiple linear regression to explore how Store A's sales ( y) are predicted by Store A's
advertising expenditure dollars (variable x1) and the advertising expenditure dollars of Store A's competitor
(variable x2).The estimated regression is y = 532 + 80.5 x1 - 35.6 x2.How much sales would be predicted if x1
is $1,000 and x2 is also $1,000? - correct answer$45,432
update
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? - correct answer Prescriptive
What are two reasons for the increasing use of analytics in organizational decision-making? - correct answer
Relatively lower cost of computer storage; Higher computer processing power
How does probability theory inform decision-making for managers? - correct answerBy quantifying risk
Which type of data are the Olympic medals of gold, silver, and bronze examples of? - correct answerOrdinal
data
What are two aspects of data quality management? - correct answerIt reduces the amount of incomplete data.;
It cleans data.
Which two attributes indicate potential data quality issues when evaluating a set of nominal data? - correct
answerMissing data; 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? - correct answersystematic
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? - correct answerresponse 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? -
correct answerCohort 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? - correct answerSystematic and 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? - correct answerNumber 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? -
correct answerLinear Programming
Compare outcomes of different drug testing results - correct answerANOVA
Understand effective marketing to spend advertising dollars efficiently - correct answerCorrelation
Monitor production process - correct answerControl 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 - correct answerConfusion 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? - correct answerDoes 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? - correct answerIntersection; 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? - correct
answerBayes' Theorem
Given the following data set:9, 12, 14, 10, 8, 11, 12What is the mode? - correct answer12
Which graphical tool is used to illustrate a possible relationship or correlation between two variables? - correct
answerScatterplot
What does it mean when an individual data point has a z-score of -2? - correct answerThe data point is two
standard deviations less than the mean of the data set.
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? - correct answerThe advertisement was effective in building
brand awareness.
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? - correct answerMedian
After evaluating manufacturing times for a particular product, a manager determines that the times are spread
out across the distribution. The manager has been asked to determine how far, on average, the time is from the
mean.Which statistic roughly measures the average distance of a data point from the mean of the distribution?
- correct answerStandard deviation
The number of customers that an automobile service shop receives on any given day is normally distributed
with a mean of 75 and a standard deviation of 25. On a given day, 125 oil changes are performed.What is the
probability on a given day of 125 or fewer oil changes performed? - correct answer97.7%
A nonprofit organization ran an email campaign with three different messages to solicit additional
donations.What should the nonprofit organization use to determine if the average donation differs for the
different messages? - correct answerANOVA
A manager of a call center is in charge of creating a staffing plan. The number of calls received per day is
normally distributed.Which two statistics would be needed to estimate the number of calls that would be
received 95% of the time? - correct answerStandard deviation and mean
A manager uses a linear regression to examine how the store's retail sales are predicted by advertising
expenditures.Which type of variable do retail sales represent in this regression? - correct answerDependent
variable
An analyst used multiple linear regression to explore how Store A's sales ( y) are predicted by Store A's
advertising expenditure dollars (variable x1) and the advertising expenditure dollars of Store A's competitor
(variable x2).The estimated regression is y = 532 + 80.5 x1 - 35.6 x2.How much sales would be predicted if x1
is $1,000 and x2 is also $1,000? - correct answer$45,432
