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x (year) 2005 2006 2007 2008 2009 y (sales) 12 19 29 37 45 Find the least square regression line y = a x +

x (year) 2005 2006 2007 2008 2009
y (sales) 12 19 29 37 45
  • Find the least square regression line y = a x + b.
  • Use the least squares regression line as a model to estimate the sales of the company in 2012 and 2020.

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