True or False: The professor of a business statistics class wanted to find out the mean amount of
time per week her students spent studying for the class.Among the 50 students in her class, 20%
were freshmen, 50% were sophomores and 30% were juniors.She decided to select 2 students
randomly from the freshmen, 5 randomly from the sophomores and 3 randomly from the juniors.
This is an example of a systematic sample.

Question

Quizplus · Accepted Answer

This is an example of a stratified sample, not a systematic sample. In a stratified sample, the population is divided into subgroups (strata) and random samples are taken from each subgroup.

True or False: the Professor of a Business Statistics Class