Classification of Forecasts Sales force composites; .Customer surveys Subjective-based on human Jury of executive opinion; judgment .The Delphi method; Causal Models-the forecast for a phenomenon is some function Objective-derived of some variables from analysis of .Time Series Methods- data forecast of future values of some economic or physical phenomenon is derived from a collection of their past observationsClassification of Forecasts Subjective-based on human judgment Objective-derived from analysis of data •Sales force composites; •Customer surveys •Jury of executive opinion; •The Delphi method; •Causal Models-the forecast for a phenomenon is some function of some variables •Time Series Methods￾forecast of future values of some economic or physical phenomenon is derived from a collection of their past observations