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If the mean of few observations is 40 and standard deviation is 8 , then what is the coefficient of variation? $\quad$
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Verified Answer
The correct answer is:
$20 \%$
Mean $=40, \mathrm{S.D}=8$
$\therefore \quad$ Coeft of variation $=\frac{8}{40} \times 100$
$=\frac{1}{5} \times 100-20 \%$
$\therefore \quad$ Coeft of variation $=\frac{8}{40} \times 100$
$=\frac{1}{5} \times 100-20 \%$
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