Monthly demand at A&D electronics for flat-screen TVs are as shown. Estimate demand for month 13 using simple exponential smoothing with =0.3 and Holts model with =0.05 and =0.1. For the simple exponential smoothing model, use forecast for F1=1,634 (the average demand over the 12 months). For Holts model, use F1=980 and T1=101 (both obtained through regression). Evaluate the MAD, MAPE and MSE for each forecast. Which of the two methods is more accurate? Why?

Month	Demand (units)
1	1,000
2	1,113
3	1,271
4	1,445
5	1,558
6	1,648
7	1,724
8	1,850
9	1,864
10	1,925
11	2,076
12	2,137