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    Petroco Service Station: Exponentially smoothed forecast & MAPD

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    The manager of the Petroco Service Station wants to forecast the demand for unleaded gasoline next month so that the proper number of gallons can be ordered from the distributor. The owner has accumulated the following data on demand for unleaded gasoline from sales during the past 10 months:

    Month Gasoline Demanded (gal.)
    October 800
    November 725
    December 600
    January 500
    February 625
    March 690
    April 810
    May 935
    June 1,200
    July 1,100

    a. Compute an exponentially smoothed forecast, using an α value of 0.30.
    b. Compute the MAPD.

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    Solution Summary

    The solution comprises of detailed calculations of Exponential Smoothing Forecast and MAPD in Excel.