| 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 | 15 | 0.208333 | 0.347222 | 0.041667 |
| [-10,-5[ | -7.5 | 15 | 0.208333 | 0.555556 | 0.041667 |
| [-5,0[ | -2.5 | 25 | 0.347222 | 0.902778 | 0.069444 |
| [0,5] | 2.5 | 7 | 0.097222 | 1 | 0.019444 |
