Simple steps of forecasting

Forecasting is a important part of any business, i use to to think that this is a very simple process. but once i joined as a forecasting manager, i realize that there are heaps of different components effecting the total numbers. When we are forecasting we need to focus at the following factors:

1. History data - Average last 6 or 8 weeks data and create a base line.
   
2. Market conditions - apply the markets growth or declines to the forecast.
3. Add the promo to the future forecast.
   
4. Create a formula to multiply the sales units by the Net average selling price, which will give us the Net value for the total year.

To be con't....