Suppose the ordinary least-squares approach to a regression analysis produced the following: Y = 20 - 39X and R2 = .90.Which of the following statements is FALSE?
A)For every unit change in X there is a corresponding negative change in the average value of Y of 39 units.
B)90% of the variation in Y is associated with variation in X.
C)The slope of the line is 20.
D)The average value of Y given x = 10 is −370.
E)If X = 0,then Y = 20.

Question

Quizplus · Accepted Answer

The slope of the regression line is given by the coefficient of X, which is -39 in the equation Y = 20 - 39X, not 20. The number 20 represents the Y-intercept, not the slope.

Suppose the Ordinary Least-Squares Approach to a Regression Analysis Produced