The Zocor Company Is Interested in Forecasting Period 13 Sales

Multiple Choice

The Zocor Company is interested in forecasting period 13 sales for a product. It has 12 months of historical data. The following shows the data and the forecasted values for periods 1-12 using a single exponential smoothing model with a smoothing constant value equal to 0.20 What is the forecast bias value for the model over periods 2-12?

A) About 8.7
B) Approximately -11.9
C) About ± 8.9
D) None of the above