Consider the following demand by Month:
Month
Demand
1
1800
2
2200
3
1950
4
2150
5
2000
6
1900
7
2300

Use the simple Moving average approach to forecast the demand for Period 8. Use a window size of 3.  Show your work.
Use the exponential approach to forecast the demand for Period 8. Use and Alpha of .3. Show your work.
Determine which forecasting approach is the most accurate using the

Mean Absolute Deviation approach
Mean Square Error
Mean Absolute Percent Error approach.