If `n=10 , X =12 ` and `sumx_(i)^2=1530 ,` then the coefficient of variation is (a) 36% (b) 41% (c) 25% (d) none of these

Explanation

To find the coefficient of variation given the values \( n = 10 \), \( \bar{X} = 12 \), and \( \sum X_i^2 = 1530 \), we can follow these steps:

### Step 1: Calculate the variance (\( \sigma^2 \))
The formula for variance is given by:

\[ \sigma^2 = \frac{\sum X_i^2}{n} - \bar{X}^2 \]
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