In a sample of professors on a university campus, the researcher randomly selects 5 academic departments, and then interviews each professor in those selected departments. What type of sampling scheme is this?

In a sample of professors on a university campus, the researcher randomly selects 5 academic departments, and then interviews each professor in those selected departments. What type of sampling scheme is this?




(A) convenience sample
(B) cluster sample
(C) stratified random sample
(D) simple random sample


Answer: (B) cluster sample


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