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For a frequency distribution, standard d...

For a frequency distribution, standard deviation is computed by :

A

`sigma = sqrt((sum f (X - bar(X)))/(sum f))`

B

`sigma = sqrt((sum f (X - bar(X))^(2))/(sum f))`

C

`sigma = sqrt((sum f (X - bar(X))^(2))/(sum f))`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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