The mean of 5 observations is 5 and their variance is 12.4 . If three of the observations are $1,2 \& 6$; then the value of the remaining two is : (1) 1,11 (2) 5,5 (3) 5,11 (4) None of these
The mean of 5 observations is 5 and their variance is 12.4 . If three of the observations are $1,2 \& 6$; then the value of the remaining two is :\\
(1) 1,11\\
(2) 5,5\\
(3) 5,11\\
(4) None of these