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

In a series of 2n observations, half of them equal to a and remaining equal to b. If the standard deviation of the observations is 2, then |a| equals :

A

`(1)/(n)`

B

`sqrt(2)`

C

2

D

`(sqrt(2))/(n)`

Text Solution

Verified by Experts

The correct Answer is:
B
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