Statistics And Probability Question 317

Question: If v is the variance and s is the standard deviation, then

[Kurukshetra CEE 1995]

Options:

A) $ v^{2}=\sigma $

B) $ v={{\sigma }^{2}} $

C) $ v=\frac{1}{\sigma } $

D) $ v=\frac{1}{{{\sigma }^{2}}} $

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Answer:

Correct Answer: B

Solution:

It is obvious.