4. Users were the least familiar and the most dissatis¯ed with the Box-Jenkins method Box-Jenkins method. This result is consistent with empirical

¯ndings indicating that the method is di±cult to understand 11/1 Surveys among forecasting users 519 Method Satis¯ed Neutral Dissatis¯ed Subjective Jury of executive opinion 54 24 22 Customer expectations 45 23 32 Sales force composite 43 25 32 Objective(quantitative)

Regression 67 19 14 Exponential smoothing 60 19 21 Moving average 58 21 21 Trend-line analysis 58 28 15 Classical decomposition 55 14 31 Simulation 54 18 28 Life cycle analysis 40 20 40 Straight-line projection 32 31 37 Box-Jenkins 30 13 57