Calculate the forecast errors for months 2 to 6, and then compute MAD and MAPE for those months for the double exponential smoothing forecast and compare them with those of simple exponential smoothing. Based on your calculations, is simple or double exponential smoothing a better forecasting approach in this specific case?

When =0.5, the MAD of forecast errors for months 2 to 6 is

When =0.5, the MAPE of forecast errors for months 2 to 6 is ___%

When =0.7, the MAD is ___and the MAPE is ____%

Month	Sales / Demand
1	1443
2	1358
3	1342
4	1298
5	1277
6	1183