With the existence of step functions within a particular component , the advantage of judgmental forecasting is very pronounced over statistical forecasting . Even statistical forecasts themselves can be revised and combined to a finer accuracy through the use of judgmental methods . According to several independent studies , this method is inferior to most forms of statistical forecasting . As stated , judgmental forecasting is a very narrowly applicable method . Independently , it shows many flaws and shortcomings that would need to be further addressed by...











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