Question: There are many programs that seek to change behavior. One way to assess the effect of a program is to give a pretest, administer the

There are many programs that seek to change behavior. One way to assess the effect of a program is to give a pretest, administer the program, and give a posttest. To really prove the lasting value of the program, however, a researcher must gather follow-up data some months later to see if the improvement seen at posttest has continued. In the scores below, larger numbers represent improved performance. Analyze the data, compile it into a summary table, and make three HSD Write an interpretation that describes the effect of the program.

Pretest Posttest One-year follow-up

Subject 1 10 28 21

Subject 2 13 27 24

Subject 3 17 36 26

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