A researcher wants to study ethnic variations in students' study habits at a major university. There are 80% Caucasians, 10% African Americans, and 10% Hispanics at the university. The researcher wants his sample to reflect the proportions of ethnic groups at the university. He would use what type of sampling technique:
A) Simple random sampling
B) Systematic random sampling
C) Stratified random sampling
D) Stratified random sampling with differential probabilities

Question

Quizplus · Accepted Answer

Stratified random sampling would be the best choice as it allows the researcher to select a sample that reflects the proportions of ethnic groups at the university. This ensures that the sample is representative of the population and allows for meaningful comparisons to be made across different ethnic groups.

A Researcher Wants to Study Ethnic Variations in Students' Study