what is the MAD for period 5-9?

use the following data to answer the next five questions. Monthly sales for the past nine periods along with the associated forecasts are shown in the following table. Month Sales Forecast 1 770 775 2 778 785 790 3 786 4 790 787 795 5 793 6 790 788 791 7 794 8 800 9 801 798 799 Begin to compute the tracking signal starting in period five by updating the MAD with exponential smoothing. Use an alpha value of 0.25. Remember, you are computing a MAD and tracking signal, not a new forecast. Keep at least two decimal points in all your calculations. More is fine. Our nn Use the following data to answer the next five questions. Monthly sales for the past nine periods along with the associated forecasts are shown in the following table. Month Sales Forecast 1 770 775 2 778 785 3 786 790 4 790 787 5 793 795 6 790 788 7 794 791 8 800 798 9 801 799 Begin to compute the tracking signal starting in period five by updating the MAD with exponential smoothing. Use an alpha value of 0.25. Remember, you are computing a MAD and tracking signal, not a new forecast. Keep at least two decimal points in all your calculations. More is fine