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The standard deviation for first natural number is
A. 5.5
B. 3.87
C. 2.97
D. 2.87

1 Answer

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Best answer
Correct Answer - D
We know that SD of first n natural number
`sqrt((n^(2)-1)/12)`
`therefore "SD of first 10 natral number" =sqrt(((10)^(2)-1)/12)`
`=sqrt((100-1)/(12))=sqrt(99/12)=sqrt(8.25)=2.87`

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