Given a mean of 60 and a variance of 324, calculate the Coefficient of Variation (CV).

Here are the solutions to the questions:

Question 25:
To find the Coefficient of Variation (CV), we need the standard deviation and the mean.
From the problem statement, we are given:
Mean ($\mu$) = 60
Variance ($\sigma^2$) = 324 (from the line above the options for Q25)

Step 1: Calculate the Standard Deviation ($\sigma$).

$$\sigma = \sqrt{\text{Variance}} = \sqrt{324} = 18$$

Step 2: Calculate the Coefficient of Variation (CV).

$$\text{CV} = \frac{\sigma}{\mu} \times 100\%$$ $$$$