Dr. Pule is conducting a research study of undergraduate students at her university. She wants to ensure an equal number of students from each year level, so she uses the list of all students provided by the university. From each list, she randomly selects 50 students from each group. What strategy of sampling is Dr. Pule using?

A.
Accidental sampling.

B.
Stratified random sampling.

C.
Cluster sampling.

D.
Simple random sampling.

E.
Quota sampling.

1 answer

Dr. Pule is employing B. Stratified random sampling. This method involves dividing the population (undergraduate students) into subgroups (strata) based on a characteristic (year level) and then randomly selecting from each subgroup to ensure that each group is adequately represented in the sample. In this case, she is ensuring an equal number of students from each year level by randomly selecting 50 students from each group.