The Equation for R Involves Dividing the by

Multiple Choice

The equation for r involves dividing the by .

A) product of the variances of X and Y (S_x²S_y²) ; COV_xy
B) COV_xy; the product of the variance of X and Y (S_x²S_y²)
C) COV_xy; the product of the standard deviation of X and Y (S_xS_y)
D) product of the standard deviation of X and Y (S_xS_y) ; COV_xy