The mean of 6 distinct observations is 6.5 and their variance is 10.25 . If 4 out of 6 observations are $2,4,5$ and 7, then the remaining two observations are: (1) 10,11 (2) 3,18 (3) 8,13 (4) 1,20
The mean of 6 distinct observations is 6.5 and their variance is 10.25 . If 4 out of 6 observations are $2,4,5$ and 7, then the remaining two observations are:\\
(1) 10,11\\
(2) 3,18\\
(3) 8,13\\
(4) 1,20