The editor of the newspaper at a large university wants to measure student opinion on a proposed change in graduation requirements. The editor randomly selects 100 freshman, 100 sophomores, 100 juniors and 100 seniors to take a short survey. This plan is an example of what kind of sampling?

The editor of the newspaper at a large university wants to measure student opinion on a proposed change in graduation requirements. The editor randomly selects 100 freshman, 100 sophomores, 100 juniors and 100 seniors to take a short survey. This plan is an example of what kind of sampling?


A) Systematic sampling 

B) Stratified random sampling 

C) Convenience sampling

D) Simple random sampling

E) Cluster sampling



Answer: stratified random sampling


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