The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 1-46414-253-X
ISBN 13: 978-1-46414-253-6

Chapter 2 - Describing Distributions with Numbers - Chapter 2 Exercises - Page 68: 2.33a

Answer

The distributions best summarized by the mean and standard deviation are reasonably symmetric distributions free of outliers. The summary measures are not appropriate in this situation. The control group has two pairs of data points that are more than 50 seconds apart (-81 and -29, 145 and 229).

Work Step by Step

Page 59 states the reason for using the five number summary instead of the mean and standard deviation.
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