Which of the following statement(s) is (are) an important consideration(s) in applying linear regression techniques?
A) the relationship should be linear
B) both variables must be measured in the same units
C) predictions for Y should be within the range of the X variable in the sample
D) a and c

Question

Quizplus · Accepted Answer

A linear relationship between the variables is important because linear regression assumes a linear relationship. Predictions for Y should be within the range of the X variable in the sample because extrapolation beyond this range can result in unreliable predictions. Both variables do not necessarily need to be measured in the same units, as long as appropriate transformations are used. Therefore, statements A and C are the important considerations in applying linear regression techniques, and the answer is D.

Which of the Following Statement(s) Is (Are) an Important Consideration(s)