The result of the linear regression is: Y=0.10-0.50X, with a correlation coefficient ρ=-0.90. The fraction of the variance of Y attributable to X is equal to:
The result of the linear regression is: Y=0.10-0.50X, with a correlation coefficient ρ=-0.90. The fraction of the variance of Y attributable to X is equal to: A.-0.90; B.+0.90; C.+0.81; D.-0.50