1. A correlation of -.88 between television viewing time and grades in high school is best understood as demonstrating that:

a. as television viewing time increases, grades increase

b. as television viewing time decreases, grades decrease

c. as television viewing time increases, grades decrease

d. none of the alternatives are correct

2. Which of the following could not be a correlation coefficient?

a. -.65

b. .00

c. 1.50

d. 1.00

3. When the correlation coefficient is zero, the points on the scatter plot

a. appear to fall directly on the regression line

b. appear to fall closely around the regression line

c. appear to be randomly scattered on the graph

d. cannot be plotted