Mathematics, 27.06.2019 21:30 18alewis
What is the correlation coefficient with the following data points: (15,36), (13,22), (12,6), (11,20)? a.0.75 b.-0.75 c.0.65 d.-0.65
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/0024/7552/60b8b.png)
![r =\frac{4\times1118-51\times84}{\sqrt{[4\times659-2601][4\times2216-7056]}}](/tpl/images/0024/7552/00cc8.png)
![r =\frac{4472-4284}{\sqrt{[2636-2601][8864-7056]}}](/tpl/images/0024/7552/e0707.png)
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What is the correlation coefficient with the following data points: (15,36), (13,22), (12,6), (11,2...
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