Interpret Variability

• The data are more spread out in the 1st quartile than the 3rd
• The data are more spread out in the 3rd quartile than the 1st
• The interquartile range is 22
• 50% of the data are between 50 and 72

Which best represents the Interquartile Range

• 15

• 93

• 85

• 78

Which Shop has a wider range of surfboard prices? 

• Shop A

• Shop B

Which of these best estimates the standard deviation of runs scored per team in one season?

• 10

• 30

• 60

• 90

Each box plot summarizes the number of miles driven each day for 30 days in each month. The box plots represent, in order, the months of August, September, October, November, and December. Arrange them in order from least to greatest variability.

• E

• A

• D

• C

• B

1. These two box plots have the same median and the same maximum and minimum values. How could we compare the variability of the two distributions?

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Here are two dot plots, each with a mean of 15 centimeters, displaying the length of sea scallop shells in centimeters.

Which graph has a lower variability.

• 1st

• 2nd

What is the IQR?

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