Saved Bookmarks
| 1. |
Mean of 5 observation is 7. if four of these observation are 6,7,8,10 and one is missing, then te variance of all the five observations isA. 2B. 6C. 8D. 4 |
|
Answer» Correct Answer - D `because7=(6+7+8+10+x_(5))/(5)impliesx_(5)=4` `becausesigma=(sum(x_(i)-overline(x))^(2))/(5)=(1)/(5)[1+0+1+9+9]=4` |
|