Given the least squares regression line y-hat = 3.52 - 1.27x, and a coefficient of determination of 0.81, the coefficient of correlation is:
A) -0.85.
B) 0.85.
C) -0.90.
D) 0.90.

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The Answer of Given the least squares regression line y-hat = 3.52 - 1.27x, and a coefficient of determination of 0.81, the coefficient of correlation is:
A) -0.85.
B) 0.85.
C) -0.90.
D) 0.90.

Given the Least Squares Regression Line Y-Hat = 3