Suppose a researcher is interested in the average ACT score for high school students in Illinois. She randomly selects 20 counties and then randomly selects 3 high schools from each selected county and then asks each student in the selected high schools what their ACT score was. What kind of sample is this?

Question

Social Studies

Ivan Olsen

19 December, 01:56

Suppose a researcher is interested in the average ACT score for high school students in Illinois. She randomly selects 20 counties and then randomly selects 3 high schools from each selected county and then asks each student in the selected high schools what their ACT score was. What kind of sample is this?

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Answers (2)

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Walker Weiss · Answer 1

Simple Random sample

Explanation:

A simpe random sample is used to represent an unbiased sample of a group. in this type of sample, every member has an equal chance of being selected.

Carly Mccarty · Answer 2

Multistage sampling D

Explanation:

The researcher used two-stage cluster sampling method; the researcher first selected randomly 20 counties from all the counties, then the researcher selected a subgroup of 3 high schools from each selected county and sample all the students in it. If it single-stage cluster sampling, the researcher randomly select a group from the large group and sample all the element.

There is also another type of cluster sampling called multi-stage sampling. This a sample method in which the researcher first divide the population into districts, from the district, a group is randomly selected, from the smaller group is again selected.