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I want the answer of this question 9.Find the correlation from theiollowing : X: 5 10 20 30 9 12 7 20. Find the Fishers Number index of the following : Items

Dear Student
X dx = X - A (dx)  Y dy = Y - A (dy)2  dxdy
5 -15 225 2 -5 25 75
10 -10 100 3 -4 16 40
15 -5 25 4 -3 9 15
        20 - A 0 0 4 -3 9 0
25 5 25 9 2 4 10
15 -5 25 12 5 25 25
30 10 100           7 - A 0 0 0
35 15 225 11 4 16 60
c = 155
N = 8
Mean = 19.37
 Σdx = -5  Σdx= 725 ΣY = 52
N = 8
Mean = 6.5
  Σdy = -4 Σdy= 104 Σdxdy =225

As here Mean is not a whole number thats why we adopt Assumed Mean method.
r = dxdy - (dx * dy)Ndx2 - (dx)2N * dy2 - (dy)2N r = 225 - (-5 * -4)8725 - (-5)28 * 104 - (-4)28 r = 222.5721.87 * 102 r = 222.526.87* 10.1 r = 222.5271.38r = 0.83

Regards

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