Question

If the coefficient of variation of some observation is 60 and their standard deviation is 20, then their mean is

• A. 35
• B. 34
• C. 33
• D. 33.33(nearly)

Answer 1

The correct option is D 33.33(nearly)

We know coefficient of variation C. V. $=\frac{{\sigma }_x}{\overline{x}}\times 100$
$\therefore$ $60=\frac{20}{\overline{x}}\times 100$ $\therefore$ $\overline{x}=33.33$(nearly)