Dr.Oishi is an educational psychologist interested in students' attitudes toward math and their effect on performance on standardized tests.He chooses his local school district to study.There are 15 middle schools and he randomly chooses five.Then,of the 1,500 students in each of those five schools,he randomly recruits 250 students.This is an example of which of the following sampling techniques?

Question

Quizplus · Accepted Answer

This is an example of a multistage sample because Dr.Oishi first sampled middle schools randomly from the entire population of schools, and then randomly selected students from those selected schools.

DrOishi Is an Educational Psychologist Interested in Students' Attitudes Toward