3.1 Discuss the benefits of forecasting in a practical setting. The number of electromagnets produced by an electronics manufacturer during the past six years are shown below: 3.2 3.3 Year 1 2 3 4 5 6 3.2.1 The plant manager thinks that the growth in sales will continue, and he wants to develop a long-range forecast to be used to plan facility requirements for the next year. Forecast the sales of electronic motors for year 7 using linear regression. Year The sales of Haval H4 cars have grown steadily during the past five years at a Haval dealership in Gezina. The sales manager had forecasted before the new model was introduced that the first-year sales would be 40 cars. 1 2 3 4 Annual Sales 5 210 240 240 300 350 350 6 Sales 42 44 46 50 60 55 -4. Forecast 40 [TURN OVER] 3.3.1 Using exponential smoothing with a smoothing constant of 0.30, calculate the forecast sales for year 2 to year 6. 3.3.2 Calculate the mean absolute deviation (MAD) for this model. (4) (8) EPT 1601 (5) (3)