1. What is the Cumulative Forecast Error (CFE) for this data?

Actual	Forecast
11	10
10	8
8	9
6	6
7	8

2 . What is the tracking signal value for the 5th period?

Actual	Forecast
11	10
10	8
8	9
6	6
7	8

3. The previous periods forecast was for 100 units, and the actual demand in the previous period was for 110 units. If exponential smoothing is used to forecast demand and alpha = .4. What will be the forecast for the next period?

102 units

106 units

108 units

104 units

110 units