Compute grocery stores weekly demand forecast.
A chain of grocery stores had the following weekly demand (cases) for a particular brand of laundry soap: Dem = Demand
| Week  | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 
| Dem | 31 | 22 | 33 | 26 | 21 | 29 | 25 | 22 | 20 | 26 | 
- Develop three also four period moving average forecasts      also compute MSA for every.  Which provides better forecast?  Illustrate      what would be the forecast for week 11?
- Develop an exponential smoothing forecast with      smoothing constants α =0.1 also 0.3.  Illustrate what would be the      forecast for week 11?
- Compute the tracking signal for every of the forecasts      in part (a) also (b).  Is there any evidence of bias?
- Might a different model provide better results?