In a regression analysis, the coefficient of determination is .4225. The coefficient of correlation in this situation is A) -.65 if b₁ is negative. B) .1785. C) .18 if b₁ is positive. D) .4225.

Question

Quizplus · Accepted Answer

The coefficient of determination (R²) is the square of the coefficient of correlation (r). If R² is .4225, then r can be either +0.65 or -0.65. Since the question specifies b₁ is negative, r is -0.65.

In a Regression Analysis, the Coefficient of Determination Is