Question: 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

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 =

n

Year

Sales

3-Year Moving Average

Absolute Error 3-year Moving Average

4-Year Moving Average

Absolute Error 4-Year Moving Average

2001

2030

2002

2155

2003

2382

2004

2412

2005

2606

2006

2892

2007

3018

2008

MAD 3-Year Moving Average ________________________

MAD 4-Year Moving Average _________________________

*Hint Absolute just means all the numbers are positive, even if they are calculated to be a negative number.

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