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Consider the following small data set. x-11 y- 22 , x-15 y-16 , x-12 y-27 , x-6 y-26 ,x-5 y- 21 Find the linear correlat...

Consider the following small data set. x-11 y- 22 , x-15 y-16 , x-12 y-27 , x-6 y-26 ,x-5 y- 21

Find the linear correlation coefficient.

r=

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Answer #1
x y x-9.8 y-22.4 (x-9.8)(y-22.4) (x-9.8)^2 (y-22.4)^2
11 22 1.2 -0.4 -0.48 1.44 0.16
15 16 5.2 -6.4 -33.28 27.04 40.96
12 27 2.2 4.6 10.12 4.84 21.16
6 26 -3.8 3.6 -13.68 14.44 12.96
5 21 -4.8 -1.4 6.72 23.04 1.96
49 112 0 0 -30.6 70.8 77.2

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一30.6 70.8 77.2

r0.4139

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