CPM Homework Banner

Home > MC2 > Chapter 4 > Lesson 4.2.3 > Problem 4-56

4-56.

Lucy and Marissa each designed a box-and-whisker plot to represent this data set:

Their plots are shown below. Which plot is scaled correctly and why? Explain the mistakes in the incorrect plot.

  1. Box Plot: x axis, scaled in fives, from 0 to 40. Left whisker: 16 to 18. Box: 18 to 29, vertical line at 25. Right whisker: 29 to 34.

  1. Box Plot: x axis with marks labeled as follow: 16, 18, 19, 19, 25, 26, 27, 32, 35. Left whisker: 16 to 18. Box: 18 to 26.5, vertical line at 25. Right whisker: 26.5 to 35.

What are the characteristics of a number line?

A number line should be spaced evenly with numbers that increase from left to right.

Part (a) is correct because the number line is equally spaced with numbers that increase by .

Part (b) is incorrect. There are two number 's. In some places the numbers increase by while others increase by , etc.

© 2022 CPM Educational Program. All rights reserved.