state gov TSPSC Forest Beat Officer (ఫారెస్ట్ బీట్ ఆఫీసర్) Mock Test 2023 Quantitative Aptitude Elementary Statistics
The following table of grouped data represents the weight (in kgs) of 100 articles:
| Class Weight (in kgs) | Frequency (Number) |
| 3-5 | 8 |
| 5-7 | 25 |
| 7-9 | 45 |
| 9-11 | 18 |
| 11-13 | 4 |
Calculate the mean weight for an article.
1
7.6 kg
2
7.7 kg
3
7.8 kg
4
7.9 kg