One important function of the least-squares regression equation is that
A) we can use it to tell if a relationship is linear
B) it summarizes all possible scores on the two variables
C) it makes the scatterplot symmetrical
D) it allows us to predict Y scores for any value of X

Question

Quizplus · Accepted Answer

The least-squares regression equation allows us to predict Y scores for any given value of X. This means that we can estimate what Y would be for a certain value of X, even if we do not have any data for that exact value. This function is especially useful for making predictions and drawing conclusions about the relationship between variables. The other choices are not accurate functions of the least-squares regression equation.

One Important Function of the Least-Squares Regression Equation Is That