Criterion: Differentiate between positive, negative, and neutral relationships among variables.
Instruction: For each of the following, answer this: Do you expect the relationships between the variables to be negative (-), positive (+), or zero (0):
a. Size of yard and size of landscaping bill.
b. Years of education and income level.
c. Hours of TV watched per week and physical fitness level.
d. Number of siblings and number of pets.
e. Hours spent studying and exam scores.