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 fourth month weighted moving average forecast covering the same time period (5 last month, 3 second month, 2 third month and 1 fourth month). Which one is better? How is the forecast quality for both methods? Round each forecast to two decimal places. Make the process

Month	Unit Sales	Manager's Forecast	Fourth Month W.M.A.
January	52
February	61	52
March	73	65
April	79	73
May	66	76
June	51	66
July	47	53
August	44	47
September	30	34
October	55	40
November	74	55
December	125	84
January		125