For Exercises 2.77 to 2.79, see page 101; and for 2.80, see page 102.
2.83 Predict the sales
You analyzed the past 10 years of sales data for your company, and the data fit a straight line very well. Do you think the equation you found would be useful for predicting next year's sales? Would your answer change if the prediction was for sales five years from now? Give reasons for your answers.
2.83
Yes, predicting next year is reasonable. Yes, predicting 5 years from now is extrapolation.