WGU C207 DATA DRIVEN DECISION-
MAKING MODULE 2 | OA| OBJECTIVE
ASSESSMENT| EXAM QUESTIONS AND
ANSWERS
b 95%
c
, c) 95.4 c) 3/5
b 95% d 60%
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Term
Standard deviation measures
a the average of the difference for the data set.
b the normal exceptions between the expected data points.
c the median of the data set distributed equally.
d the dispersion from the average for the data set.
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b 2.8 to 8.8
d the dispersion from the
95.4% is 2 standard deviations from average for the data set.
the median
an estimate of the distance between d The data point is one standard
the sample mean and the deviation greater than the mean of
population mean the data set.
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Definition
When a piece of the population can be selected more than once
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Both a and c Sampling without replacement
Sampling with replacement Sample without replacement
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Term
An online marketing organization designed a social media that wants
to earn at least $250,000 in revenue. The campaign will reach 10,000
viewers and receive orders with a mean of $50 and standard
deviation $10. Which measure should be used to determine the
probability of the campaign receiving at least $250,000?
a T-statistic
b Z-score
c Median
d R-squared
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, The correct answer is 24360. 30
different cars, chosen by 3
a Not a representative sample
customers without replacement:
=30×29×28=24,360.
b Z-score d Variance
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Term
Oscar surveys thirty households in Ohio about their preferences for
pasta and, based on the results, concludes that a majority of
Midwesterners prefer spaghetti over egg noodles. He is correct in
making this inference. T/F
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T. This sample size is large enough F. This sample size is too small
for a global generalization. with only thirty households.
T. This sample size is sufficient for a F. This sample size is adequate for a
regional conclusion. national inference.
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6 of 107
MAKING MODULE 2 | OA| OBJECTIVE
ASSESSMENT| EXAM QUESTIONS AND
ANSWERS
b 95%
c
, c) 95.4 c) 3/5
b 95% d 60%
Don't know?
2 of 107
Term
Standard deviation measures
a the average of the difference for the data set.
b the normal exceptions between the expected data points.
c the median of the data set distributed equally.
d the dispersion from the average for the data set.
Give this one a try later!
b 2.8 to 8.8
d the dispersion from the
95.4% is 2 standard deviations from average for the data set.
the median
an estimate of the distance between d The data point is one standard
the sample mean and the deviation greater than the mean of
population mean the data set.
Don't know?
, 3 of 107
Definition
When a piece of the population can be selected more than once
Give this one a try later!
Both a and c Sampling without replacement
Sampling with replacement Sample without replacement
Don't know?
4 of 107
Term
An online marketing organization designed a social media that wants
to earn at least $250,000 in revenue. The campaign will reach 10,000
viewers and receive orders with a mean of $50 and standard
deviation $10. Which measure should be used to determine the
probability of the campaign receiving at least $250,000?
a T-statistic
b Z-score
c Median
d R-squared
Give this one a try later!
, The correct answer is 24360. 30
different cars, chosen by 3
a Not a representative sample
customers without replacement:
=30×29×28=24,360.
b Z-score d Variance
Don't know?
5 of 107
Term
Oscar surveys thirty households in Ohio about their preferences for
pasta and, based on the results, concludes that a majority of
Midwesterners prefer spaghetti over egg noodles. He is correct in
making this inference. T/F
Give this one a try later!
T. This sample size is large enough F. This sample size is too small
for a global generalization. with only thirty households.
T. This sample size is sufficient for a F. This sample size is adequate for a
regional conclusion. national inference.
Don't know?
6 of 107
