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WGU C207 - DATA DRIVEN DECISION MAKING
EXAM | FREQUENTLY TESTED QUESTIONS
WITH CORRECT ANSWERS | BRAND NEW!
Multiplying two events calculates an ____________ - ✔✔✔ Correct
Answer > Intersection
Adding two events calculates a _______________ - ✔✔✔ Correct Answer
> Union
The grocer is running a 10 for $10 special on cans of soup. You
can mix and match the 5 different flavors of soup. You decide to
purchase 10 cans. What can we use to count all the possible
outcomes of flavors picked? - ✔✔✔ Correct Answer > Combination
There is a 90% chance you will have to wait in line for more than
6 minutes to check out at the grocer. What is the complement? -
✔✔✔ Correct Answer > 10%. If there is a 90% chance of yes, then there
is a 10% chance of no. 90% + 10% = 100%
50% chance it will rain. There is a 20% chance you park in the
garage in the rain and a 60% chance you park there if it is not
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raining. Given you are parked in the garage, what is the
probability it is raining? Which probability technique applies? -
✔✔✔ Correct Answer > Bayes
You conduct a quick survey asking friends to rate your new
website on a scale of 1 - 10. Which graph will show how the
responses are distributed? - ✔✔✔ Correct Answer > Histogram.
Keyword: Distribution (How many people answered 1, 2, 3......
NOTE: The histogram is a bar chart
You have the number of customers that visit your website by
clicking on a promotion email. Which graph can show you if sales
are correlated to the number of promotional emails each week? -
✔✔✔ Correct Answer > Scatter Diagram Keyword: Correlation or
Relationship
A relationship is stronger when r is closer to what number? -
✔✔✔ Correct Answer > 1 (100%)
A relationship is weakest when r is closer to what number? - ✔✔✔
Correct Answer > 0
As sales increase, estimated delivery times decrease. This
relationship is _______ - ✔✔✔ Correct Answer > Negative
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As the age of the customer increases, the credit score increases.
This relationship is_______ - ✔✔✔ Correct Answer > Positive
Which tool helps us collect and organize the data for a
histogram? - ✔✔✔ Correct Answer > Check sheet
You want to compare the average daily gas prices in your
neighborhood to average daily gas prices by the Interstate. Name
your tool. - ✔✔✔ Correct Answer > Two Sample t-test
You want to compare the average weekly gas prices in your
neighborhood to your annual budgeted price. Name your tool. -
✔✔✔ Correct Answer > One Sample t-test
T-test uses this test statistic - ✔✔✔ Correct Answer > T-stat. (must be
higher than critical value to reject the null)
ANOVA uses this test statistic - ✔✔✔ Correct Answer > F-stat. (must
be higher than critical value to reject the null)
You want to compare price per gallon between the neighborhood
gas station, the Grocer station and the Interstate station. Name
your tool. - ✔✔✔ Correct Answer > ANOVA
WGU C207 - DATA DRIVEN DECISION MAKING
EXAM | FREQUENTLY TESTED QUESTIONS
WITH CORRECT ANSWERS | BRAND NEW!
Multiplying two events calculates an ____________ - ✔✔✔ Correct
Answer > Intersection
Adding two events calculates a _______________ - ✔✔✔ Correct Answer
> Union
The grocer is running a 10 for $10 special on cans of soup. You
can mix and match the 5 different flavors of soup. You decide to
purchase 10 cans. What can we use to count all the possible
outcomes of flavors picked? - ✔✔✔ Correct Answer > Combination
There is a 90% chance you will have to wait in line for more than
6 minutes to check out at the grocer. What is the complement? -
✔✔✔ Correct Answer > 10%. If there is a 90% chance of yes, then there
is a 10% chance of no. 90% + 10% = 100%
50% chance it will rain. There is a 20% chance you park in the
garage in the rain and a 60% chance you park there if it is not
,Page 2 of 29
raining. Given you are parked in the garage, what is the
probability it is raining? Which probability technique applies? -
✔✔✔ Correct Answer > Bayes
You conduct a quick survey asking friends to rate your new
website on a scale of 1 - 10. Which graph will show how the
responses are distributed? - ✔✔✔ Correct Answer > Histogram.
Keyword: Distribution (How many people answered 1, 2, 3......
NOTE: The histogram is a bar chart
You have the number of customers that visit your website by
clicking on a promotion email. Which graph can show you if sales
are correlated to the number of promotional emails each week? -
✔✔✔ Correct Answer > Scatter Diagram Keyword: Correlation or
Relationship
A relationship is stronger when r is closer to what number? -
✔✔✔ Correct Answer > 1 (100%)
A relationship is weakest when r is closer to what number? - ✔✔✔
Correct Answer > 0
As sales increase, estimated delivery times decrease. This
relationship is _______ - ✔✔✔ Correct Answer > Negative
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As the age of the customer increases, the credit score increases.
This relationship is_______ - ✔✔✔ Correct Answer > Positive
Which tool helps us collect and organize the data for a
histogram? - ✔✔✔ Correct Answer > Check sheet
You want to compare the average daily gas prices in your
neighborhood to average daily gas prices by the Interstate. Name
your tool. - ✔✔✔ Correct Answer > Two Sample t-test
You want to compare the average weekly gas prices in your
neighborhood to your annual budgeted price. Name your tool. -
✔✔✔ Correct Answer > One Sample t-test
T-test uses this test statistic - ✔✔✔ Correct Answer > T-stat. (must be
higher than critical value to reject the null)
ANOVA uses this test statistic - ✔✔✔ Correct Answer > F-stat. (must
be higher than critical value to reject the null)
You want to compare price per gallon between the neighborhood
gas station, the Grocer station and the Interstate station. Name
your tool. - ✔✔✔ Correct Answer > ANOVA
