The best-fitting regression line can be used to:
A) find the actual value of y for a given value of x
B) estimate or predict the value of y for a given value of x
C) calculate the correlation coefficient
D) all of these
E) none of these

Question

Quizplus · Accepted Answer

The best-fitting regression line allows us to estimate or predict the value of y for a given value of x. However, it cannot be used to find the actual value of y for a given value of x since there will always be some degree of error in any prediction made from a regression line. Additionally, while the correlation coefficient is related to the regression line, it is not directly calculated from it.

The Best-Fitting Regression Line Can Be Used To