Stats: Data and Models (3rd Edition)

Published by Pearson
ISBN 10: 0321692551
ISBN 13: 978-0-32169-255-9

Chapter 4 - Displaying and Summarizing Quantitative Data - Exercises: 27

Answer

a i. The middle 50% of movies ran between 97 and 119 minutes. ii. On average, movie lengths varied from the mean run time by 19.6 minutes. b) We should be cautious in using the standard deviation because the distribution of run times is skewed to the right.

Work Step by Step

a i. The middle 50% of movies ran between 97 and 119 minutes. ii. On average, movie lengths varied from the mean run time by 19.6 minutes. b) We should be cautious in using the standard deviation because the distribution of run times is skewed to the right.
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