Box Plot

Display data in box plots

Goal

I can make and interpret box plots.​

are values that divide ​a data set into four equal parts.

​Quartiles

a diagram that shows the distribution of data values using the median, quartiles, minimum value, and maximum value on one number line.

​Box Plot

Vocabulary

Example 1: Make a box plot

Helen ​wants a display the lengths of 15 fish she caught this year to compare to the lengths of fish she caught last year. How can she use the data to make a box plot?

Example 2: Make a box plot

​The Earth Club collected enough donations online to build compost bins. How can the club record the donation information in a box plot?

Interpret a box plot

The ​box plot shows the distribution of the weights, in pounds, of bags of bags of donated clothing. What information do you know from the box plot.

Open Ended

The lengths in inches of 11 fish that Helen caught last year are listed below:

7, 8, 12, 12, 12, 13, 14, 15, 16, 17, 22

Circle the first quartile, median, and third quartile.

Draw

The ages of 12 volunteers participating in a beach clean-up are shown:

15, 27, 9, 15, 21, 9, 21, 9, 15, 21, 21 24

Record the ages in a box plot

Key Concept

A box ​plot shows a distribution of data values on a number line. A box plot visually represents a data set divided into four equal parts.