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)All of these answers are correct.

Question

Quizplus · Accepted Answer

A least squares regression line is used to predict a value of y given a corresponding x value. It does not imply a cause-effect relationship between x and y, and it can be determined even if a weak linear relationship exists between x and y.

A Least Squares Regression Line