Question: Question: Develop a 3-period moving average from period 4 through 11. The manager of the Excom Service Station wants to forecast the demand for unleaded

The manager of the Excom 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
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