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In a series of 2n observations, half of ...

In a series of 2n observations, half of them are equal to `a^(2)` and the remaining half are equal to `-a^(2)`. If the standard deviation of the observation is 2, then `|a|` is equal to

A

`(1)/(n) `

B

`sqrt2`

C

`2`

D

`( sqrt2)/(n)`

Text Solution

Verified by Experts

The correct Answer is:
C
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