If the fitted regression is Y = 3.5 + 2.1X (R2 = .25,n = 25),it is incorrect to conclude that
A)Y increases 2.1 percent for a 1 percent increase in X.
B)the estimated regression line crosses the Y axis at 3.5.
C)the sample correlation coefficient must be positive.
D)the value of the sample correlation coefficient is .50.

Question

Quizplus · Accepted Answer

It is incorrect to conclude that Y increases by 2.1 percent for a 1 percent increase in X, as the coefficient 2.1 is the slope of the line and refers to the change in Y for a 1 unit increase in X, not a 1 percent increase.

If the Fitted Regression Is Y = 3