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 thoseobservations is

Step-by-step solution

Given, number of observation, n=10 , Mean, x =50 and |x i- x |^2=250 Variance, ^2= _ i=1 ^n |x_i- x |^2 n gathered ^2= _ i=1 ¹⁰ |x_i- x ^2 | 10 = 250 10 =25 =5 gathered Cofficient of variation, C.V. = x 100= 5 50 100=10