| Frequency Table (Histogram) | |||||
| Bins | Midpoint | Abs. Frequency | Rel. Frequency | Cumul. Rel. Freq. | Density |
| [-25,-20[ | -22.5 | 5 | 0.069444 | 0.069444 | 0.013889 |
| [-20,-15[ | -17.5 | 5 | 0.069444 | 0.138889 | 0.013889 |
| [-15,-10[ | -12.5 | 13 | 0.180556 | 0.319444 | 0.036111 |
| [-10,-5[ | -7.5 | 14 | 0.194444 | 0.513889 | 0.038889 |
| [-5,0[ | -2.5 | 26 | 0.361111 | 0.875 | 0.072222 |
| [0,5] | 2.5 | 9 | 0.125 | 1 | 0.025 |
