Question: Petroco Service Station manager has accumulated the following data on demand for unleaded gasoline from sales during the past 10 months. Compute an exponentially smoothed forecast using a value of .30. Compute an adjusted exponentially smoothed forecast of .30 and .20. Compare the two forecasts using MAPD and indicate which seems to be more accurate.

Month Gasoline Demanded (gal)

October 800

November 725

December 630

January 500

February 645

March 690

April 730

May 810

June 1,200

July 980