Question

To gather information about the validity of a new standardized test for tenth-grade students in a particular state, a random sample of 15 high schools was selected from the state. The new test was administered to every 10th-grade student in the selected high schools. What kind of sample is this?

Answer 1

Answer: Probabilistic

Explanation: This kind of sample is probabilistic, a random sampling. In this kind of sampling you select a group of students (in this case) among the totality of the high-schools that were randomly selected. This allows the investigation to be more trustworthy and accurate.