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standard deviation is the best measure of dispersion because..

a)It measure the absolute dispersion

b)It is most frequentlyused as prossesses almost all the the qualities that a good measure of variation have.

c)It is beased on all observation.

d)It is rigidly defined.

e)It is capable of further algebraic treatment.

f)It is least affected by the fluctuation of sampling.

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Q: Why is standard deviation called the best of all measures of dispersion?
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