WGU C207 DATA DRIVEN DECISION MAKING PRE
ASSESSMENT NEWEST 2024-2025 ACTUAL EXAM REAL
QUESTIONS AND CORRECT DETAILED ANSWERS
(CORRECT VERIFIED SOLUTIONS) A NEW UPDATED
VERSION |GUARANTEED PASS A+
Which graphical tool is used to illustrate a possible
relationship or correlation between two variables? -
Answer-Scatterplot
What does it mean when an individual data point has a z-
score of -2? - Answer-The 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 the 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? - Answer-The 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? - Answer-Median
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? - Answer-Standard Deviation
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? - Answer-ANOVA
, 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? Choose 2 answers - Answer-
Standard Deviation
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? - Answer-Dependent
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? - Answer-$45,432
ASSESSMENT NEWEST 2024-2025 ACTUAL EXAM REAL
QUESTIONS AND CORRECT DETAILED ANSWERS
(CORRECT VERIFIED SOLUTIONS) A NEW UPDATED
VERSION |GUARANTEED PASS A+
Which graphical tool is used to illustrate a possible
relationship or correlation between two variables? -
Answer-Scatterplot
What does it mean when an individual data point has a z-
score of -2? - Answer-The 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 the 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? - Answer-The 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? - Answer-Median
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? - Answer-Standard Deviation
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? - Answer-ANOVA
, 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? Choose 2 answers - Answer-
Standard Deviation
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? - Answer-Dependent
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? - Answer-$45,432
