The following data are monthly sales of jeans at a local department store. The buyer would like to forecast sales of jeans for the next month, July.
(a) Forecast sales of jeans for March through June using the naïve method, a two-period moving average, and exponential smoothing with an α = 0.2.
(b) Compare the forecasts using MAD and decide which is best.
(c) Using your method of choice, make a forecast for the month ofJuly.

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Month January February 30 March April Sales 45 40 50 June 47