The Formula Below Is the Formula for _______________________ A) the Standard Error of the Estimate
B) the Standard

The formula below is the formula for _______________________. $$r _ { w y } = r _ { y w } = \frac { \Sigma \left( X _ { i } - \bar { X } \right) \left( Y _ { i } - \bar { Y } \right) } { \sqrt { \Sigma \left( X _ { i } - \bar { X } \right) ^ { 2 } \Sigma \left( Y _ { i } - \bar { Y } \right) ^ { 2 } } }$$

A) the standard error of the estimate
B) the standard error of the mean
C) the coefficient of determination
D) the Pearson's correlation coefficient