Box Plots

What is the interquartile range?

• 4
• 6
• 2
• 8

What value is the lower quartile?

• 66
• 58
• 60
• 64

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number
• Add the two numbers in the middle & then divide by two.
• They are both the median
• None of the above

2. Which of the following best describes the process of finding the interquartile range for a set of data?

• Add the biggest and smallest numbers.
• Place the numbers in order from least to greatest and find the middle.
• Find the difference between the maximum and the minimum.
• Subtract Q1 from Q3.

Find the median of these numbers:

2, 5, 4, 3, 7, 5, 5,

• 4

• 5

• 3

• 6

What percentage of the data is between 90 and 140?

• 25 %
• 50%
• 75%
• 100%

What is the upper quartile of the set of data; 2, 4, 6, 6, 7, 8, 10

• 4

• 6

• 8

• 2

• The range of the data for Fun Fit is less than the range of the data for Greg’s Gym.

• The median for Greg’s Gym is less than the median for Fun Fit.

• The minimum attendance for Fun Fit is less than the minimum attendance for Greg’s Gym.

• The interquartile range for Greg’s Gym is greater than the interquartile range for Fun Fit.

• The minimum temperature for Reybold is lower than the minimum temperature for Picktown.

• The median for Reybold and Picktown are equal.

• The first quartile for Reybold is greater than the first quartile for Picktown.

• Picktown has a greater interquartile range than Reybold.

Use the box-and-whisker plots to determine which statement is not true.

• The interquartile range of the men’s ages is greater than the interquartile range of the women’s ages.
• The youngest member of the club is a woman.
• The median of the men’s ages is greater than the median of the women’s ages.
• The range of the men’s ages is greater than the range of the women’s ages.