The Following Sums of Squares Are Produced: ? $$\left( y _ { i } - \bar { y } \right) ^ { 2 }$$

Multiple Choice

The following sums of squares are produced: ? $$\left( y _ { i } - \bar { y } \right) ^ { 2 }$$ = 250, ? $\left( y _ { i } - \hat { y } _ { i } \right) ^ { 2 }$ = 100, ? $\left( \hat { y } _ { i } - \bar { y } \right) ^ { 2 }$ = 150.
The percentage of the variation in y that is explained by the variation in x is:

A) 60%.
B) 75%.
C) 40%.
D) 50%.