Stratified samples are employed:
A) only when simple random samples are appropriate
B) when systematic samples are not possible
C) as much as possible due to their superiority
D) when you wish to represent categories of different sizes
E) none of the above

Question

Quizplus · Accepted Answer

Stratified samples are employed to represent categories of different sizes, so the best choice is D. A, B and C are incorrect as they either limit the use of stratified samples or overstate their superiority.

Stratified Samples Are Employed