The mean and the variance of five observations are 4 and 5.20 , respectively. If three of the observations are 3, 4 and 4 ; then the absolute value of the difference of the other two observations, is : (1) 3 (2) 5 (3) 7 (4) 1
The mean and the variance of five observations are 4 and 5.20 , respectively. If three of the observations are 3, 4 and 4 ; then the absolute value of the difference of the other two observations, is :\\
(1) 3\\
(2) 5\\
(3) 7\\
(4) 1