1. Cereal again The correlation between a cereal’s fiber and potassium contents is r = XXXXXXXXXXWhat fraction of the variability in potassium is accounted for by the amount of fiber that servings...

1. Cereal again The correlation between a cereal’s fiber and potassium contents is r = 0.903. What fraction of the variability in potassium is accounted for by the amount of fiber that servings contain?

2. Another car The correlation between a car’s horsepower and its fuel economy (in mpg) is r = -0.909. What fraction of the variability in fuel economy is accounted for by the horsepower?