A professor intends to compare the performances of his first year economics subject students at the four campuses of the university. In order to do so, he selects a random sample of 40 first year economics students from each campus. What is this type of sampling called?
A)Stratified random sampling.
B)Simple random sampling.
C)Cluster sampling.
D)None of these choices are correct.

Question

Quizplus · Accepted Answer

This is an example of stratified random sampling as the professor has divided the population (first year economics students) into four strata (the four campuses) and then selected a random sample from each stratum.

A Professor Intends to Compare the Performances of His First