The Target field is the variable to be predicted in the analysis and is required in order for the MultiRate analysis to run. This field cannot contain NULL values. If the Training Data does happen to contain NULL values in the column meant to be used as the Target, a Filter can be used to exclude records where the target column is NULL.
The model construct is:
so the model will create factors for each characteristic to obtain a Modeled Target amount that is as close to the Actual Target as possible.