Before polling the students in Scion School of Business, a researcher divides all the current students into groups based on their class standing, such as freshman, sophomores, and so on. Then, she randomly draws a sample of 50 students from each of these groups to create a representative sample of the entire student body in the school. Which of the following sampling methods is the researcher practicing?
A) Simple random sampling
B) Systematic random sampling
C) Stratified random sampling
D) Cluster sampling
E) Snowball sampling

Question

Quizplus · Accepted Answer

The researcher is using stratified random sampling, as she has divided the population into strata (groups based on class standing) and then randomly selected a sample from each stratum in order to create a representative sample of the entire student body.

Before Polling the Students in Scion School of Business, a Researcher