Refer to Problem 4.21. Complete the trend-adjusted exponential-smoothing forecast computations for periods 7, 8, and 9. Confirm that your numbers for Ft, Tt, and FITt, match those in Table 4.1.
In Problem 4.21, Refer to the trend-adjusted exponential smoothing Illustration in Example 7 on pages 149-150. Using α = .2 and β = .4, we forecast sales for 0 months, showing the detailed calculations for months 2 and 3. In Solved Problem 4, 2 we continued the process for month 4.
In this problem, show your calculations for months 5 and 6 for Ft, Tt, and FITt.