The variance of observations `112, 116, 120,125, 132` is

The variance of observations 8,12,13,15,22, is

Statement-1 : The variance of the variates 112, 116, 120,125,132 about their A.M. is 48.8. Statement-2 : sigma=sqrt((Sigma_(i=1)^(n) f_i(x_i-barx)^2)/(Sigma_(i=1)^(n) f_i)

The variance of observations 3,4,5,8 is

The variance of the vriates 112, 116,120,125,132 about their A.M. is

The variance of 25 observations is 4. If 2 is added to each observation, then the new variance of the resulting observation is

The mean and variance of the 7 observations is 8 and 12 resp. . If two observations are 8 and 6 . find the variance of the remaining observation

The mean and variance of 7 observations are 8 and 16 respectively. If two observations are 6 and 8, then the variance of the remaining 5 observations is :