Introduction to Statistics and Data Analysis
5th Edition
ISBN: 9781305115347
Author: Roxy Peck; Chris Olsen; Jay L. Devore
Publisher: Brooks Cole
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Textbook Question
Chapter 4.3, Problem 32E
Based on a large national sample of working adults, the U.S. Census Bureau reports the following information on travel time to work for those who do not work at home:
lower
upper quartile = 31 minutes
Also given was the
- a. Is the travel time distribution more likely to be approximately symmetric, positively skewed, or negatively skewed? Explain your reasoning based on the given summary quantities.
- b. Suppose that the minimum travel time was 1 minute and that the maximum travel time in the sample was 205 minutes. Construct a skeletal boxplot for the travel time data. (Hint: See Example 4.10.)
- c. Were there any mild or extreme outliers in the data set? How can you tell? (Hint: See Example 4.11.)
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Chapter 4 Solutions
Introduction to Statistics and Data Analysis
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