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eBook Refer to the gasoline sales time series data in the given table. Week Sales (1,000s of gallons) 1 17 2 21 3 16 4 24 5 17 6 18 7 22 8 20 9 21 10 19 11 16 12 25 (a) Compute four-week...

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Basic Math

  • eBook

Refer to the gasoline sales time series data in the giventable.

WeekSales (1,000s of gallons)
117
221
316
424
517
618
722
820
921
1019
1116
1225
(a)Compute four-week and five-week moving averages for the timeseries.
If required, round your answers to two decimal places.

Week
Sales		4 Period
Moving Average		5 period
Moving Average
117
221
316
424
517
618
722
820
921
1019
1116
1225
(b)Compute the MSE for the four-week and five-week moving averageforecasts.
If required, round your final answers to three decimalplaces.
MSE for four-week moving average =
MSE for five-week moving average =
(c)What appears to be the best number of weeks of past data(three, four, or five) to use in the moving average computation?Consider that the MSE for the three-week moving average is12.852.

Answer & Explanation Solved by verified expert
4.4 Ratings (1068 Votes)
a Compute fourweek moving averageCompute fiveweek moving averages for the time    See Answer
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