Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Elementary Statistics
What is the mean of the following distribution?
| Marks | 10 | 30 | 50 | 70 | 90 |
| Number of students | 17 | 28 | 32 | 24 | 19 |
1
51
2
50
3
52.4
4
More than one of the above
5
None of the above