Local university administrators developed a new curriculum and wanted to pilot it on a representative student sample. Approximately 20% of students study online and 80% are residential students. Administrators wanted the pilot sample to have a similar makeup so they used:
A) convenience sampling.
B) simple random sampling.
C) stratified random sampling.
D) area probability sampling.

Question

Quizplus · Accepted Answer

Stratified random sampling is used when the population is divided into different subgroups or 'strata' and samples are taken from each stratum to ensure representation of the whole population. In this case, the university administrators divided the students into two strata (online and residential) to ensure the sample reflects the overall student body composition.

Local University Administrators Developed a New Curriculum and Wanted to Pilot