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The standard deviation for first natural...

The standard deviation for first natural number is

A

`5.5`

B

`3.87`

C

`2.97`

D

`2.87`

Text Solution

Verified by Experts

The correct Answer is:
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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