Chapter 3, Problem 3.28E

Remember that $r^2$ can be expressed as a proportion or as apercent. (When written as a percent, the percent sign willalways be included.)

1. Explain which of the following not a value could be for $r^2$ : 0, —0.25, 0.3, 10, 1.7, 25%, —50%, ÷ 200%.
2. Refer to the values in part (a). Which one of the legitimate values for $r^2$ represents the strongest relationshipbetween x and y?