Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 3 - Section 3.2 - Measures of Dispersion for Ungrouped Data - Exercises - Page 96: 3.28


The following is the list of age group using a laptop frequently in the past two weeks. 13, 15, 17, 19, 17, 27, 25, 60 The range = Largest value - smallest value = 60 - 13 = 47 If 60 is removed, the new range will be 14. Therefore, the range is not a good measure of dispersion to use for a data set that contains outliers. This indicates that the range is a nonresistant measure of a dispersion.

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