2.2 Consider the following data for airplane sales from 2006 to 2012. Use a 3-year moving average...

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2.2 Consider the following data for airplane sales from 2006 to 2012. Use a 3-year moving average model and a linear trend model to forecast the sales in 2013. Which model is likely to give you a better result?

2006 2007 2008 2009 2010 2011 2012 15 20 35 40 55 70 80

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