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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