1. Correlation A relationship between 2 variables As one goes up, you can tell whether the other will go up or down.

2. Freedom & Happiness The Key to Happiness is Freedom, Not Money

3. Cancer & Fat

4. Experience & Income

5. Preventative Maintenance and Cost of Service

6. Income and Religious Attendance

7. Grip Strength & Arm Strength

8. Height & Weight

9. Car Weight & Gas Mileage

10. Elevation & Temperature

11. Blood Pressure: Systolic vs. Diastolic

12. How Temperature Affects Coffee Sales

13. Scores in Language and Math for Elementary Students

14. Sleep & Test Scores

15. Do pro basketball teams run up the score against bad opponents?

16. Ages of Married Couples

17. Lawyers’ LSAT Scores & Salaries

18. Temperature & Electrical Resistance

19. Effect of Beer Drinking on Achievement

20. You can tell a lot from a scatterplot. * Strong vs. weak * Positive vs. negative