Give a variable that could be used to stratify the population for each of the following studies.

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Give a variable that could be used to stratify the population for each of the following studies. List at least four subcategories for each variable.

a. A political party wants to conduct a poll prior to an election for the premier of New Brunswick

b. A soft drink company wants to take a sample of soft drink purchasesin an effort to estimate market share

c. A retail outlet wants to interview customers over a one-week period

d. An eyeglasses manufacturer and retailer wants to determine the demand for prescription eyeglasses in its marketing region

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Business Statistics For Contemporary Decision Making

ISBN: 9781119577621

3rd Canadian Edition

Authors: Ken Black, Ignacio Castillo

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