What does a positive difference mean? A. The students who studied without music did better than the students who studied with music.

_______ What does a negative difference mean? B. The students who studied with music did better than the students who studied without music.

1. Examine the differences reported above.
2. a. What is the biggest difference that you observe? Do you consider this extreme?
3. b. What is the smallest difference you observe? Do you consider this extreme?
4. c. If one of the differences is considered extreme, how did you determine this? What would
5. an extreme value be called?
6. d. What is the typical difference that you observe? Explain how you determined this value.