Demand Forecasting By using the following data:

Week	Forecast	Actual
1	150	160
2	155	162
3	160	158
4	158	160
5	?

Forecast demand for the next period by using:

1. Weighted 4 weeks average with the following weights:

Week 1: 20%

Week 2: 20%

Week 3: 25%

Week 4: 35%

2. Two weeks moving average
3. Single Exponential Smoothing