Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 2 - Frequency Distributions and Graphs - 2-1 Organizing Data - Exercises 2-1 - Page 52: 12


The distribution is incorrectly constructed because the classes are not equal in width.

Work Step by Step

The width is found by subtracting the lower limit from the upper limit for each class. In this example the widths are 4, 5, 5, 2 and 3. For a correctly constructed distribution, all the widths must be the same.
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