Correct Answer - Option 3 : 0.12
Concept:
Coefficient of variation = \(\rm \frac{\sigma _{x}}{\bar{x}}\)
Where,
\(\rm \sigma _{x}\) = Standard Deviation
\(\rm \bar{x}\) = Mean of the observations
Calculation:
Coefficient of variation = \(\rm \frac{17.4}{148}\)
∴ Coefficient of variation is 0.12