When preparing a representative sample from a list of 200 customers who complained about errors in their statements,a _____ could ensure the sample is balanced geographically by selecting five customers from each of four zip codes.
A) systematic sample
B) stratified sample
C) random sample
D) comprehensive sample

Question

Quizplus · Accepted Answer

A stratified sample involves dividing the population into subgroups, or strata, based on a specific characteristic (in this case, geographic location). By selecting five customers from each of the four zip codes, the sample will be more representative of the overall population and ensure that the sample is balanced geographically.

When Preparing a Representative Sample from a List of 200