Given the Least Squares Regression Line $\hat { y } = 2.48 - 1.63 x$

Multiple Choice

Given the least squares regression line $\hat { y } = 2.48 - 1.63 x$ ,and a coefficient of determination of 0.81,the coefficient of correlation is:

A) -0.66
B) 0.81
C) -0.90
D) 0.90