Introductory Statistics
3rd Edition
ISBN: 9780135188927
Author: Gould, Robert, Ryan, Colleen N. (colleen Nooter)
Publisher: Pearson,
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Textbook Question
Chapter 3, Problem 25SE
Drinkers The number of alcoholic drinks per week is given for adult men and women who drink. The data are at this text’s website. (Source: Alcohol data from adults survey results, accessed via StatCrunch. Owner: rosesege)
a. Compare the
b. Compare the standard deviation of the number of drinks of men and of women.
c. Remove the outliers of 70 and 48 drinks for the men, and compare the means again. What effect did removing the outliers have on the mean?
d. What effect do you think removing the two outliers would have on the standard deviation, and why?
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Chapter 3 Solutions
Introductory Statistics
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