Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 2 - Section 2.2 - Assess Your Understanding - Applying the Concepts - Page 98: 38

Answer

The distribution is somewhat skewed right, but is mostly symmetrical (bell shaped).

Work Step by Step

Stems: 2, 3, 4, 5 and 6. There are five stems. If these stems represent one class each, we will have five classes for 45 numbers. The distribuition will look better if we split the stems. After this step, we have ten classes: 2, 2, 3, 3, 4, 4, 5, 5, 6, 6. The first 4 represents the numbers from 20 to 24 and the second from 25 to 29, and so on. The peak is in the fourth class and the tail to the right (the bottom of the plot) is longer than the tail to the left (the upper of the plot). Aside from this, the distribution is mostly symmetrical (bell shaped).
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