CHOOSE THE ANSWER BELOW.

a. positive correlation b. negative correlation c. no correlation

1. Cholesterol level and incidence of coronary heart disease.
2. IQ level and Grade Point Average.
3. Number of campaign materials used by marketing representatives and level of awareness of customers.
4. Number of television commercials and sales of its product.
5. Board Exam performance and eating habits.
6. Amount of time spent studying and final exam scores.
7. Income and expenditure.
8. Mileage a vehicle has been driven and selling price.
9. Outside temperature and ice cream sales.
10. Income and educational attainment.