In a series of observations , SD is 7 and mean is 28 .
Find the coefficient of variation .

In a series of observations , coefficient of variation is 16 and mean is 25 . Find the variance .

In a series of observations , find the coefficient of variation , given SD = 12.5 and AM = 50 .

If the mean of 10 observations is 50 and the sum of the squares of the deviations of the observations from the mean is 250 , such the coefficient of variation of those observations is

If the mean of 10 observation is 50 and the sum of the square of the deviations of observation from the mean is 250, then the coefficient of variation of these observation is

If the mean of 10 observation is 50 and the sum of the square of the deviations of observation from the mean is 250, then the coefficient of variation of these observation is

If the mean of 10 observations is 50 and the sum of the squares of the deviations of the observations from the mean is 250, then the coefficient of variation of those observations is

If the mena of few observations is 40 and standard deviation is 8, then what is the coefficient of variation?

If the sum of squares of the diviations of 10 observations taken from the mean 50 is 250, then the coefficient of variation is-