Box Plots

Box Plots

By Kaylie Eckhout

Box plots are a way of representing the spread of data.

​

​Some text here about the topic of discussion.

How to read a box plot

​Minimum or smallest value

Maximum or largest value

​Range of data= Maximum-Minimum

Fill in the Blanks

What is the range of math quiz results from Mrs. Sanchez's class?

Fill in the Blanks

What is the median of math quiz results from Mrs. Sanchez's class?

How to read a box plot

​Lower Quartile Q1

​Upper Quartile Quartile Q3

​25%

​25%

​25%

​25%

Multiple Choice

What percentage of scores were between 20 and 30?

• 0%

• 25%

• 50%

• 75%

Multiple Choice

What percentage of scores were between 30 and 70?

• 0%

• 25%

• 50%

• 75%

How to read a box plot

​Interquartile

​Interquartile Range:

Q3-Q1​

​Q1

​Q3

Multiple Choice

What is the interquartile range of these scores?

• 50

• 70

• 40

• 30

Multiple Choice

What is the median?

• 62
• 58
• 66
• 60

Multiple Choice

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

Multiple Choice

What percentage of the data is between 90 and 140?

• 25 %
• 50%
• 75%
• 100%

Multiple Choice

What is the minimum value?

• 64
• 58
• 66
• 60

Fill in the Blanks

Given the Box Plot: Find the Interquartile Range. (Q3 - Q1 = 75.5 - 33.5)

Fill in the Blanks

Given the Box Plot: Identify the Maximum

Multiple Choice

Which car club has the higher median?

• Cruisers

• Car Hops

• Neither. Can't determine median from the graph.

Multiple Choice

The box-and-whisker plots shown below represent the salaries of employees at two different

companies.

What is the difference between the median salaries of the employees at the two companies?

• $0

• $500

• $1000

• $2000