If the regression coefficient of x on y and y on x are \(- \frac{1}{2}\) and \(- \frac{1}{8}\) respectively, then what is the correlation coefficient between x and y?

If the regression coefficient of x on y and y on x are \(- \frac{1}{2}

1.	If the regression coefficient of x on y and y on x are \(- \frac{1}{2}\) and \(- \frac{1}{8}\) respectively, then what is the correlation coefficient between x and y?
A.	\(- \frac{1}{4}\)
B.	\(- \frac{1}{{16}}\)
C.	\(\frac{1}{{16}}\)
D.	\(\frac{1}{4}\)
Answer» B. \(- \frac{1}{{16}}\)