Which of the Following Is an Example of Inferential Statistics

Multiple Choice

Which of the following is an example of inferential statistics?

A) William uses a small sample of depressed people to predict mood changes in a large population of depressed people.
B) Charles interviews three schizophrenic patients.
C) Leslie notes the relationships between a psychology professor and the students in her class.
D) Janet gives participants a personality test both before and after they take a final exam.