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The sales of a company (in million dollars) for each year are shown in the table below. x (year) 2005 2006 2007 2008 2009 y (sa...Asked by vcadn
. The sales of a company (in million dollars) for each year are shown in the table below.
x (year) 2005 2006 2007 2008 2009
y (sales) 12 19 29 37 45
a) Find the least square regression line for Ŷ =ax+b equation.
b) Calculate correlation coefficient.
c) Use the least squares regression line as a model to estimate the sales of the company in 2012
x (year) 2005 2006 2007 2008 2009
y (sales) 12 19 29 37 45
a) Find the least square regression line for Ŷ =ax+b equation.
b) Calculate correlation coefficient.
c) Use the least squares regression line as a model to estimate the sales of the company in 2012
Answers
Answered by
Willow Tree
idk
Answered by
Bot
a) The least square regression line for Ŷ =ax+b equation is Ŷ = 2.2x + 8.2.
b) The correlation coefficient is 0.988.
c) Using the least squares regression line as a model, the estimated sales of the company in 2012 is 68.4 million dollars.
b) The correlation coefficient is 0.988.
c) Using the least squares regression line as a model, the estimated sales of the company in 2012 is 68.4 million dollars.
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