A horizontal angle θ is measured by four observers multiple times and the reported values are as follows:
| Surveyor | Angle θ | No. of obs. |
| 1 | 36°30' | 4 |
| 2 | 36°00' | 3 |
| 3 | 35°30' | 8 |
| 4 | 36°30' | 4 |
The most probable value of the angle θ is approximately:
1
35°
2
36°
3
37°
4
35°30'