A least squares regression line
A)may be used to predict a value of y if the corresponding x value is given
B)implies a cause-effect relationship between x and y
C)can only be determined if a good linear relationship exists between x and y
D)None of these alternatives is correct.

Question

Quizplus · Accepted Answer

A least squares regression line can be used to predict a value of y if the corresponding x value is given. It does not imply a cause-effect relationship between x and y, and while a good linear relationship between x and y is ideal, it is not necessary for a least squares regression line to be determined.

A Least Squares Regression Line