The Miracle corporation had the ff. sales had the ff. sales during the past 10 yrs. (In thousands of dollars)
2003 200 2008 302
2004 215 2009 320
2005 237 2010 345
2006 260 2011 360
2007 278 2012 382
a) Calculate a trend line, and forecast sales for 2013. How confident are you on this forecast.
b) Use exponential smoothing factor w = 0.7. What is your 2013 forecast. How confident are you of this forecast