Using the table below creating a 3-year and 4-year moving average and predict sales for 2008. Find the mean absolute deviation (MAD) for both the 3 and 4 year moving averages.( MAD=Σ | Error | n

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Using the table below creating a 3-year and 4-year moving average and predict sales for
2008. Find the mean absolute deviation (MAD) for both the 3 and 4 year moving
averages.(
MAD= Error
Year
2001
2002
2003
2004
2005
2006
2007
2008
n
Sales
2030
2155
2382
2412
2606
2892
3018
3-Year Moving
Average
MAD 3-Year Moving Average
MAD 4-Year Moving Average
Absolute Error
3-year Moving
Average
4-Year Moving
Average
Absolute Error
4-Year Moving
Average
Transcribed Image Text:Using the table below creating a 3-year and 4-year moving average and predict sales for 2008. Find the mean absolute deviation (MAD) for both the 3 and 4 year moving averages.( MAD= Error Year 2001 2002 2003 2004 2005 2006 2007 2008 n Sales 2030 2155 2382 2412 2606 2892 3018 3-Year Moving Average MAD 3-Year Moving Average MAD 4-Year Moving Average Absolute Error 3-year Moving Average 4-Year Moving Average Absolute Error 4-Year Moving Average
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