engineering recuitment ONGC AEE Mechanical Mock Test 2025 Quantitative Aptitude Elementary Statistics
The mean and variance of five observations are 4.4 and 8.24 respectively. If three observations are 1, 2 and 6, then the other two observations are
1
4 and 9
2
9 and 5
3
13 and 1
4
More than one of the above
5
None of the above