Stats Modeling the World, 4th Edition

Published by Pearson
ISBN 10: 0133151549
ISBN 13: 978-0-13315-154-1

Chapter 3 - Displaying and Summarizing Quantitative Data - Exercises - Page 74: 12

Answer

a) The distribution of the number of emails sent is skewed to the right, so the mean is larger than the median. b) The distribution of the number of emails received from each student is skewed to the right, ranging from 1 to 21 emails. The distribution is centered at about 2 emails, with many students sending 1 email. One student sends 21 emails. c) The median and IQR would be used to summarized the distribution of the number of emails received, since the distribution is strongly skewed.

Work Step by Step

a) The distribution of the number of emails sent is skewed to the right, so the mean is larger than the median. b) The distribution of the number of emails received from each student is skewed to the right, ranging from 1 to 21 emails. The distribution is centered at about 2 emails, with many students sending 1 email. One student sends 21 emails. c) The median and IQR would be used to summarized the distribution of the number of emails received, since the distribution is strongly skewed.
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