TABLE 7-1
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 7-1, if there are four different brands of DVD players made by the company, the best sampling strategy would be to use a
A) simple random sample.
B) stratified sample.
C) cluster sample.
D) systematic sample.

Question

Quizplus · Accepted Answer

A stratified sample would be the best choice because it allows for the division of the population of customers who purchased the DVD players into strata based on the brand of DVD player they purchased. This ensures that the sample adequately represents all four brands of DVD players and increases the precision of the estimate of customer satisfaction for each brand. A simple random sample or systematic sample would not ensure that all four brands are adequately represented in the sample, and a cluster sample would involve grouping customers based on a geographic location, which is not relevant to the research question.

TABLE 7-1 The Manager of the Customer Service Division of a Major