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For a frequency distribution standard de...

For a frequency distribution standard deviation is computed by applying the formula\
`sigma=sqrt((sumfd^2)/(sumf)-((sumfd)/(sumf))^2)^2`
(b) `sigma=sqrt(((sumfd^2)/(sumf))-(sumfd^2)/(sumf))`
(c) `sigma=sqrt((sumfd^2)/(sumf)-(sumfd)/(sumf))` (d) `sqrt(((sumfd)/(sumf))^2-(sumfd^2)/(sumf))`

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Verified by Experts

The formula used for a frequency distribution standard deviation is computed by:
`sigma=sqrt((sumfd^2)/(sumf)-((sumfd)/(sumf))^2)`
Hence, option `(a)` is the correct answer.
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RD SHARMA-TABULAR REPRESENTATION OF STATISTICAL DATA -All Questions
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