The professor of a business statistics class wanted to find out the average 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 draw 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 not an example of systematic sampling, as the students are being selected randomly from different subgroups within the population.

The Professor of a Business Statistics Class Wanted to Find