General Description of Curve Fitting
1. Overall a company usually has a distribution of business by month.
2. Items are added. Items are discontinued. Sales go up and sales go down.
3. But the % of business overall by month for the total company stays fairly consistent.
4. Focus ForecastingŪ can forecast items that display seasonal historic patterns.
5. Many items however display no seasonality.
6. New items usually do not display usable seasonality.
7. For these items Focus ForecastingŪspreads the yearly forecast by month.
8. It uses this hierarchy :
-- Calculated : The seasonality used is this item's previous year of sales.
-- Item           : The seasonality is specified for this item.
-- Vendor      : The seasonality is specified for this vendor.
-- Company   : The seasonality is calculated for the overall company.

Technical Description of Curve Fitting
1. If a seasonal formula is selected , use this item's last year sales to calculated seasonality.
2. If an item's seasonality is specified , use these monthly % to calculated seasonality.
3. If a vendor's seasonality is specified , use these monthly % to calculated seasonality.
4. Otherwise use the company's monthly % to calculated seasonality.
5. Item seasonality can be calculated by product class or family.
6. Vendor seasonality can also be calculated.
7. View the seasonality used for the item by clicking on the drop down box :