Question

If the variance of a probability distribution is 5.5 grams, then what proper way to get the standard deviation? ​

Answer 1

SOLUTION

GIVEN

The variance of a probability distribution is 5.5 grams

TO DETERMINE

The proper way to get the standard deviation

EVALUATION

Here it is given that the variance of a probability distribution is 5.5 grams

We know that standard deviation ( S.D.) is always taken as positive quantity . The square of the S.D. is called variance of distribution

Variance = ( S.D.)²

Hence the required standard deviation

$\sf{ = + \sqrt{5.5} \: \: grams}$

$\sf{ = 2.35 \: \: grams}$

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