Mathematics, 20.07.2019 02:00 rosetoheart2
Calculate the correlation coefficient of (2,2), (5,3), (7,6), (9,7)
Answers: 1
![r = \frac{n[sum xy] - [sum x][sum y]}{ \sqrt{[n(sum x^{2} )- (sum x)^{2}][n( sum y^{2}) -( sum y)^{2} ] } }](/tpl/images/0109/9992/7bb7f.png)
![r = \frac{4*124 - 23*18}{ \sqrt{[4*159 - 23^{2} ][4*98 - 18^{2}] } }](/tpl/images/0109/9992/06300.png)
= 0.9613
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Calculate the correlation coefficient of (2,2), (5,3), (7,6), (9,7)...
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