(1 pt) Compare the forecasting methods discussed in Questions 1-3 in order to identify the best forecasting method among them. For this question, compute MAE, RMSE, and MAPE under these methods and compare the corresponding values. What is the best forecasting method? Hint: You dont have to consider methods that are redundant in your comparison.

MM-YY	Period	Sales
	t	St
Jul-09	1	3,924
Aug-09	2	2,619
Sep-09	3	6,920
Oct-09	4	5,676
Nov-09	5	8,348
Dec-09	6	6,044
Jan-10	7	6,877
Feb-10	8	6,535
Mar-10	9	6,395
Apr-10	10	6,684
May-10	11	5,414
Jun-10	12	3,180
Jul-10	13	4,350
Aug-10	14	3,175
Sep-10	15	6,935
Oct-10	16	6,356
Nov-10	17	8,919
Dec-10	18	7,146
Jan-11	19	7,763
Feb-11	20	7,397
Mar-11	21	7,286
Apr-11	22	7,498
May-11	23	6,386
Jun-11	24	4,209
Jul-11	25	4,825
Aug-11	26	3,764
Sep-11	27	7,066
Oct-11	28	7,015
Nov-11	29	9,535
Dec-11	30	8,278
Jan-12	31	8,773
Feb-12	32	8,393
Mar-12	33	8,288
Apr-12	34	8,432
May-12	35	7,455
Jun-12	36	5,346