# 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.

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.

### Correct answer:

**Showing 1 comment:**

**Mathematican**

For linear regression we use this calculator:

https://www.hackmath.net/en/calculator/linear-regression?input=2+12%0D%0A5+20%0D%0A7+25%0D%0A11+26%0D%0A15+40

https://www.hackmath.net/en/calculator/linear-regression?input=2+12%0D%0A5+20%0D%0A7+25%0D%0A11+26%0D%0A15+40

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