In Regression Analysis, the Coefficient of Determination $$R ^ { 2 }$$

Multiple Choice

In regression analysis, the coefficient of determination, $$R ^ { 2 }$$ , measures the amount of variation in y that is:

A) caused by the variation in x.
B) explained by the variation in x.
C) unexplained by the variation in x.
D) caused by the variation in x or explained by the variation in x.