WGU C207 Data Driven Decision Making
PA (Latest Update ) Questions
with Correct Answers {Grade A} 100%
Verified
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?
a) Mean
b) Median
c) Frequency
d) Mode - correct answer b) 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?
,a) Mean
b) Standard deviation
c) Mode
d) Arithmetic mean - correct answer b) standard 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.
a) 67%
b) 68.5%
c) 97.7%
d) 99% - correct answer c) 97.7%
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?
,a) t-test
b) Mean
c) ANOVA
d) Median - correct answer c) 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.
a) Standard deviation
b) Mean
c) Median
d) Interquartile range - correct answer a) Standard Deviation
b) Mean
A hospital gathers the blood pressure readings of a sample of patients. They find that
the mean, median, and mode of this data set are all nearly equal and that 50% of the
, blood pressure readings are less than the mean and 50% are greater than the mean.
Which histogram would correctly graph this data set?
a) Graph looks like a hill
b) Graph has scattered data
c) Graph is a valley
d) Graph is massive to the right - correct answer a) Graph that looks like a hill
The following is a graph of a normally distributed data set with a mean of 10 and a
standard deviation of 2:
What is the probability that a randomly selected event from the data set will be
between 8 and 12?
a) 68.2%
b) 95.4%
c) 99.6%
d) 100% - correct answer a) 68.2%
PA (Latest Update ) Questions
with Correct Answers {Grade A} 100%
Verified
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?
a) Mean
b) Median
c) Frequency
d) Mode - correct answer b) 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?
,a) Mean
b) Standard deviation
c) Mode
d) Arithmetic mean - correct answer b) standard 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.
a) 67%
b) 68.5%
c) 97.7%
d) 99% - correct answer c) 97.7%
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?
,a) t-test
b) Mean
c) ANOVA
d) Median - correct answer c) 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.
a) Standard deviation
b) Mean
c) Median
d) Interquartile range - correct answer a) Standard Deviation
b) Mean
A hospital gathers the blood pressure readings of a sample of patients. They find that
the mean, median, and mode of this data set are all nearly equal and that 50% of the
, blood pressure readings are less than the mean and 50% are greater than the mean.
Which histogram would correctly graph this data set?
a) Graph looks like a hill
b) Graph has scattered data
c) Graph is a valley
d) Graph is massive to the right - correct answer a) Graph that looks like a hill
The following is a graph of a normally distributed data set with a mean of 10 and a
standard deviation of 2:
What is the probability that a randomly selected event from the data set will be
between 8 and 12?
a) 68.2%
b) 95.4%
c) 99.6%
d) 100% - correct answer a) 68.2%
