Question

Use the first 9 months to forecast for October 2019 using the following than calculate  Exponential smoothing with αlpha=0.2
2019 Monthly Demand = [1,058,895] [1,098,476] [1,714,796] [1,469,545] [2,141,204] [940,652] [1,471,479] [1,557,795] [1,873,287]

Answer 1

Forecast for next month = Alpha * Actual of previous month +(1-Alpha) *Forecast of the previous month.

Since we don't have forecast for Month 1, we take it as actual

Month	Actual Sales	Exponential forecast, Alpha= 0.2
1	1058895	10,58,895
2	1098476	1058895.00
3	1714796	1066811.20
4	1469545	1196408.16
5	2141204	1251035.53
6	940652	1429069.22
7	1471479	1331385.78
8	1557795	1359404.42
9	1873287	1399082.54
OCT		0.2*1873287+0.8*1399082.54=1493923.43