3. Using only the Seattle sales data:

1. Forecast sales for January 5^th through January 30^th using exponential smoothing with alpha set to 0.6. Assume the sales forecast for January 4^th was 456. (6pts)

2. Using your forecasts from Q3.1, find the mean absolute deviation of the sales forecasts for January 5^th through January 29^th. Again, you should not include the forecast for January 30^th since there is no corresponding sales figure for that date. (4pts)

3. Using your forecasts from Q3.1, find the mean squared error of the sales forecasts for January 5^th through January 29^th. (4pts)

Date	Chicago	Seasonal Relatives for Chicago Sales	Nashville	Seattle
1/4/21	272	0.4	659	456
1/5/21	388	0.5	493	672
1/6/21	622	1.3	483	584
1/7/21	605	1.7	579	609
1/8/21	222	1.4	652	596
1/9/21	222	1.6	535	529
1/10/21	302	0.9	399	612
1/11/21	338	1.2	423	683
1/12/21	239	0.5	619	565
1/13/21	283	0.3	567	559
1/14/21	505	0.7	548	785
1/15/21	829	1.1	766	783
1/16/21	686	1.4	479	599
1/17/21	893	2.2	435	711
1/18/21	184	0.6	651	756
1/19/21	188	0.7	650	712
1/20/21	290	0.8	491	512
1/21/21	369	0.9	549	447
1/22/21	395	1.3	463	574
1/23/21	846	1.5	595	654
1/24/21	961	1.9	829	552
1/25/21	193	0.5	886	470
1/26/21	193	0.8	639	596
1/27/21	245	0.8	645	562
1/28/21	317	0.9	627	454
1/29/21	480	1	459	800
1/30/21