Manual Model Selection with Additional System Check

In the third case, you can have a combination of manual and automatic model selection: you specify a model and set the system so that it additionally checks historical values for a seasonal pattern or trend.

Possible combinations that you can choose are as follows:

  1. You enter a trend model for the forecast model and then let the system check historical data for a seasonal pattern by setting the model selection to seasonal for the test.
  2. You enter a seasonal model for the forecast model and then let the system check historical data for a trend by setting the model selection to trend for the test.

A reference is given to the forecast formulae used by the system for the individual models in Forecast Formulae.