Graded Quiz: Descriptive Statistics: Statistics Foundations (Meta Marketing Analytics Professional Certificate) Answers 2025

Question 1

What is the formula used to find the z-score for a data value?

• ❌ z = value + mean/std.deviation

• ❌ z = value – mean.

• ✅ z = (value – mean)/std.deviation

• ❌ z = (mean – std deviation)/value

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Question 2

What is the formula for finding the standard deviation in a spreadsheet?
(Assume that the data is in cells A1 to A100.)

• ❌ =(DEV A1:A100)

• ❌ =STD(A1:A100)

• ❌ =STANDARDDEVIATION(A1:A100)

• ✅ =STDEV(A1:A100)

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Question 3

What is the range for the given dataset?
23, 20, 31, 11, 15, 19

• ❌ 20

• ❌ 23

• ✅ 20

• ❌ -20

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Question 4

What is the mode for the following set of numbers?
26, 11, 45, 0, 7, 7, 0

• ✅ The modes are 7 and 0.

• ❌ The mode is 0.

• ❌ The mode is 45.

• ❌ The mode is 7.

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Question 5

In a normal distribution, what percentage of data values are found between the mean and one standard deviation below the mean?

• ✅ 34%

• ❌ 68%

• ❌ 13.6%

• ❌ 50%

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Question 6

What is the median for the given dataset?
1, -2, 3, -1, 2, -3

• ✅ The median is 0.

• ❌ The median is 1.

• ❌ The median is -3.

• ❌ The median is 3.

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Question 7

True or false: The median is sensitive to outliers.

• ✅ False

• ❌ True

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Question 8

What is the mean of the given set of numbers?
4, 7, 3, 1, 2, 1

• ❌ The mean is 1.

• ❌ The mean is 2.5.

• ❌ The mean is 0.

• ✅ The mean is 3.

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Question 9

How can a marketer use a measure of variation?

• ❌ III

• ❌ II

• ✅ IV (All of these)

• ❌ I

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Question 10

How might measures of central tendency be useful to a marketer?

• ✅ I, II, and III

• ❌ III

• ❌ I

• ❌ II

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🧾 Summary Table

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