If SSR 21 and SST 84 compute the coefficient of determinat
     If SSR = 21 and SST - 84, compute the coefficient of determination, r^2, and interpret its meaning.  What is the meaning of r^2?  100% of the variation in the independent variable cannot be explained by the variation in the dependent variable.  1 - r^2 of the variation in the dependent variable cannot be explained by the variation in the independent variable.  R^2 of the variation in the independent variable can be explained by the variation in the dependent variable.  R^2 100% of the variation in the dependent variable can be explained by the variation in the independent variable. 
  
  Solution
a.
r^2 = SSR/ SST = 21/84 = 0.25
b.
r^2 of the variation in the independent variable can be explained by the variation in the
 dependent variable.

