For problems 1a-1c use the following time series data: PERIOD 10 11 12 13 14

DEMAND 248 370 424 286 444

1a. Develop a three-period moving average forecast for periods 13-15. 1b. Develop a two-period weighted moving average fore. cast for periods 12 through 15. Use weights of 0.7 and 0.3 with the most recent observation weighted higher. 1c. Develop an exponential smoothing forecast (a = 0.25) for periods 11 through 15. Assume that your forecast for period 10 was 252.

For problems 2a-2c use the following time series data:

MONTH January 2012 February March April May June July August September October November December

DEMAND 119 72 113 82 82 131 111 116 89 95 88 90

2a. Develop a three-period moving average forecast for April 2012 through January 2013. Calculate the MFE, MAD, values for April through December 2012. 2b. Develop a two-period weighted moving average fore- avalues for March through December 2c. Develop an exponential smoothing forecast (a = 0.3) for February 2012 through January 2013. Assume that your forecast for January 2012 was 100. Calculate the MFE, MAD, values for February through December