Question

Suppose that the growth rate of children looks like a straight line if the height of a child is observed at the ages of 24​ months, 28​ months, 32​ months, and 36 months. If you use the regression obtained from these ages and predict the height of the child at 21​ years, you might find that the predicted height is 20 feet. What is wrong with the prediction and the process​ used?

Answer 1

The supposition is incorrect.

Explanation:

The growth rate of a child is not constant, so height versus time does not look like a straight line. Nothing is wrong with the prediction made using the false assumption. You can conclude anything you like when you start with a false premise.