Undergrad students in psychology are often required to participate in psychology

Question

Undergrad students in psychology are often required to participate in psychology experiments as part of their grade. The head of the psychology department wanted to know more about students' perceptions of the field of psychology after having participated in an experiment, so she randomly chose some of the experiments and sent a survey to all the students who participated in that experiment. What type of sampling design system is this?

A. multistage random sample

B. stratified random sample

C. cluster random sample

Explanation / Answer

C. cluster random sample

Here, the students who participated in different experiments forms different clusters and some clusters are randomly chosen first. Then, random sampling is done within each cluster.

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