1. A computer-implemented method for developing a set of key induced variability gain magnitudes for a unit comprising the steps of: gathering operational performance data for the unit comprising input and output datasets; developing an initial set of gain magnitudes between the input and output datasets; determining, by a processor, overall induced variability, overall variability ratio, and overall variability reduction ratio for the unit; tuning the initial set of gain magnitudes based on the determined overall induced variability, overall variability ratio, and overall variability reduction ratio for the unit; and selecting a single set of gain magnitudes as the set of key induced variability gain magnitudes.