BOX/WHISKER PLOTS

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

What value is the lower quartile?

• 66
• 58
• 60
• 64

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.

What is the term for the median of the upper half of the data?

• Upper Quartile or Third Quartile

• Lower Quartile or First Quartile

• Median or Second Quartile

• Minimum

What is the interquartile range?

• 4
• 6
• 2
• 8

Find the Median

• 98
• 93
• 78
• 85

Find the Minimum

• 98
• 85
• 68
• 93

Which has a larger IQR?

• Zach
• Steven
• They have the same IQR

Which has a Median of 1?

• Zach 
• Steven 
• They both have a median on 1

Victoria recorded the number of years twelve teachers in her school have taught. Her data is listed below.
2, 8, 15, 14, 1, 20, 24, 8, 10, 12, 4, 5 
What is the interquartile range of this data set?

• 9
• 10
• 15
• 23