Mean and standard deviation of a data are 48 and 12 respectively. The coefficient of variation is

The variance of 10, 10, 10, 10, 10 is

If the variance of 14, 18, 22, 26, 30 is 32, then the variance of 28, 36,44,52,60 is

Standard deviation of a collection of data is 2√2. If each value is multiplied by 3, then the standard deviation of the new data is

Given and n = 12. The coefficient of variation is