When using a regression model to make predictions,you should not predict Y for values of X larger or smaller than the values used to develop the model.

Question

Quizplus · Accepted Answer

Predicting Y for values of X outside the range used to develop the model is known as extrapolation and can lead to unreliable predictions because the relationship between X and Y may not hold outside the observed range.

When Using a Regression Model to Make Predictions,you Should Not