If the mean and standard deviation of a data are 8 and 2 respectively then the co-efficient of variation is ___.

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

The standard deviation and mean of a data are 6.5 and 12.5 respectively. Find the coefficient of variation.

If standard deviation of a data is 3, arithmetic mean is 20, then coefficient of variation is

If the mean and the standard deviation of the data 3,5,7,a,b are 5 and 2 respectively, then a and b are the roots of the equation :

Standard deviation of data is 12 and mean is 72 then coefficient of variation is

If the coefficient of variation and standard deviation are 60 and 21 respectively, the arithmetic mean of distribution is