The following table shows predicted product demand using your particular forecasting

method along with the actual demand that occurred. (Answers in Appendix D)

Forecast

Actual

1,500 1,550 1,400 1,500 1,700 1,600 1,750 1,650 1,800 1,700

a. Compute the tracking signal using the mean absolute deviation and running sum of forecast errors.

b. Discuss whether your forecasting method is giving good predictions.