WGU C207 DATA DRIVEN DECISION
MAKING OBJECTIVE ASSESSMENT
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?
The advertisement was effective in increasing sales.
The advertisement was effective in building brand awareness.
Five percent of the subjects did not like the advertisement.
Ninety-five percent of the subjects liked the brand. - ANSWERS-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?
Mean
Median
Frequency
Mode - ANSWERS-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?
Median
Standard deviation
Mode
Arithmetic mean - ANSWERS-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?
T-test
Mean
ANOVA
Median - ANSWERS-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.
MAKING OBJECTIVE ASSESSMENT
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?
The advertisement was effective in increasing sales.
The advertisement was effective in building brand awareness.
Five percent of the subjects did not like the advertisement.
Ninety-five percent of the subjects liked the brand. - ANSWERS-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?
Mean
Median
Frequency
Mode - ANSWERS-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?
Median
Standard deviation
Mode
Arithmetic mean - ANSWERS-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?
T-test
Mean
ANOVA
Median - ANSWERS-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.
