The Admissions Officer from a large university mailed a survey to 600 students selected at random.The sample was designed to include 150 students randomly selected from each of the freshman,sophomore,junior,and senior classes on campus.What sampling method was used?
A)Simple random sample
B)Systematic sample
C)Stratified random sample
D)Cluster sample

Question

Quizplus · Accepted Answer

The sampling method used is a stratified random sample since the population (students) was divided into strata (classes), and a simple random sample of 150 students was selected from each stratum. This method ensures that each stratum is represented equally in the sample, making it more representative of the overall population.

The Admissions Officer from a Large University Mailed a Survey