1. The department manager using a combination of methods has forecast sales of toasters at a local department store. Calculate the MAD for the manager's forecast. Compare the manager's forecast against a three-month weighted moving average forecast covering the same time period (5 last month, 3 second month, 2 third month. Which one is better? How is the forecast quality for both methods? Round each forecast to two decimal places.

Month	Unit Sales	Manager's Forecast	Three Month Weighted M.A.
January	52
February	61
March	73
April	79
May	66	66.25
June	51	69.75
July	47	67.25
August	44	60.75
September	30	52.00
October	55	43.00
November	74	44.00
December	125	50.75
January		71.00