Statistical XY file

Year; money spent on advertising; profit (three values each row)

2008 2 12
2009 5 20
2010 7 25
2011 11 26
2012 15 40

1. draw a scatter diagram depicting the data.
2. calculate the Pearson's correlation coefficient.
3. determine the linear regression equation.

Result

P =  0.9627
c = (Correct answer is: 1.9327x+9.1385) Wrong answer

Solution:

P=0.96265074392828=0.9627
y=f(x)=Ax+B  c=1.9327x+9.1385



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