To study math achievement in West Virginia's third graders, a researcher randomly selects 5% of the state's school districts and gives all the students in each district a math test. What sampling procedure is being used here?
A)quota
B)stratified
C)cluster
D)none of the above (all the children in the selected districts are tested - therefore the entire population is being tested, not just a sample)

Question

Quizplus · Accepted Answer

The researcher is using cluster sampling because entire school districts (clusters) are randomly selected, and all students within those selected districts are tested.

To Study Math Achievement in West Virginia's Third Graders, a Researcher