Which of the following could serve as the basis for forming a stratum?
A)usage rate
B)gender
C)income level
D)all of these
E)none of these

Question

Quizplus · Accepted Answer

All of these factors (usage rate, gender, income level) could serve as the basis for forming a stratum in market research. Strata are formed to ensure that each group within a population is represented in a sample, and these factors can help to ensure that the sample is representative of the population.

Which of the Following Could Serve as the Basis for Forming