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# Test Scores

APSTAT-E41VET

Which of the following situations does not describe a situation with sample means?

A

Select $30$ students for an after-school study session and determine how many out of the $30$ pass the next unit test.

B

Select $30$ students for an after-school study session and determine their average score on the next unit test.

C

Randomly select $30$ students for an after-school study session and another $30$ subjects who are not allowed to go to the study session; compare the average score of the two groups.

D

Randomly select $30$ students to take a unit test; next, have them all take an after-school study session before taking an equally hard unit test again. Examine the change in test scores.

E

All of the listed responses deal with sample means.