Measure of Variability Quiz

Cody surveyed his friends how many ice creams each of his friends eat each week. The table shows the number of ice creams each of his friends eat each week. Which of the following is the correct box and whisker plot.

Hint: Put them in order from least to greatest, find median, then find Q1 and Q3

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Use the following box plot that represents 4th periods test averages for the month of August. What percent were between 65 and 73?

• 25%

• 50%

• 75%

• 100%

Use the following box plot that represents 4th periods test averages for the month of August. What percent were between 65 and 92?

• 25%

• 50%

• 75%

• 100%

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

Calculate the interquartile range of the following data17, 18, 18, 19, 20, 21, 21, 23, 25

• 3
• 4
• 5
• 8

Calculate the range of the following:
2, 5, 8, 3, 13, 5

• 11
• 13
• 5
• 8

Find the MAD for the following set: 85, 90, 68, 75, 79

• 79.4
• 6.48
• 32.4
• 79

True or false? :The larger the Mean Absolute Deviation the more consistent the data is.

• True
• False

Find the Mean Absolute Deviation of the set: 6, 3, 5, 4, 8, 10

• 6

• 36

• 15

• 2

What is the minimum value?

• 64
• 58
• 66
• 61