TABLE 7-5
The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products.
-Referring to Table 7-5, if there are 4 different brands of DVD players made by the company, the best sampling strategy would be to use
A) a simple random sample.
B) a stratified sample.
C) a cluster sample.
D) a systematic sample.

Question

Quizplus · Accepted Answer

A stratified sample would be the best choice since there are 4 different brands of DVD players made by the company. Stratifying the sample by brand would ensure that each brand is represented in the sample and would allow for more precise comparisons between brands. A simple random sample, cluster sample or systematic sample would not ensure that each brand is represented in the sample.

TABLE 7-5 The Manager of the Customer Service Division of a Major