4. 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 0.2. (Hint: Use naïve to
start the exponential smoothing process.)
(b) Compare the forecasts using MAD and decide which is
best.
(c) Using your method of choice, make a forecast for the
month of July.
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