If the mean and coefficient of variation of a data are 4 and 87.5 % then the standard deviation is

If the mean and coefficient of variation of a data are 15 and 48 respectively, then find the value of standard deviation.

If the coefficient of variation of two series are 75% and 90% and their standard deviation 15 and 18, then their mean is

If the coefficient of variation of a collection of data is 57 and its standard deviation is 6.84 , then find the mean.

If co-efficient of variation = 45% and mean = 24. Find the standard Deviation

If the coefficient of variation of some observation is 60 and their standard deviation is 20, then their mean is