Probit Curve

The Probit Curve is one of the three new product models used in the New Product forecasting method, but it is also a stand-alone forecasting technique. For additional information, see New Product Forecasting.

To use Probit Curve forecasting technique:

1. Click the Forecast Method tab.
2. From the Forecast Technique menu, scroll through the list of methods and select Probit Curve. The Probit Curve Forecasting technique appears.
   
3. Enable the Edit Parameters checkbox to activate Probit Curve’s parameters. 
4. In the Value Limit section, select the minimum and maximum values.
5. Select either Optimized or Fixed. 
   

   Option	Description
   Optimized	Optimize the maximum value specified. The maximum value might be changed to a value lower than specified but this is done to optimize the forecast generated.
   Fixed	Maximum value set is used as the maximum for the created forecast.

6. Click Finish.