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The standard deviation of a, a+d, a + 2d...

The standard deviation of a, a+d, a + 2d,….a + 2nd is

A

nd

B

`n^(2)d`

C

`(sqrt(n(n+1)))/(3)d`

D

`(sqrt(n(n+3)))/(3)d`

Text Solution

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The correct Answer is:
C
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