The Dean of Students mailed a survey to a total of 400 students.The sample included 100 students randomly selected from each of the freshman,sophomore,junior,and senior classes on campus last term.What sampling method was used?
A)simple random sample
B)systematic sample
C)stratified sample
D)cluster sample

Question

Quizplus · Accepted Answer

The sample is stratified because it includes 100 students randomly selected from each of the freshman, sophomore, junior, and senior classes. This ensures that the sample is representative of each class and provides equal representation from each group.

The Dean of Students Mailed a Survey to a Total