| Frequency Table (Histogram) | |||||
| Bins | Midpoint | Abs. Frequency | Rel. Frequency | Cumul. Rel. Freq. | Density |
| [-25,-20[ | -22.5 | 7 | 0.083333 | 0.083333 | 0.016667 |
| [-20,-15[ | -17.5 | 9 | 0.107143 | 0.190476 | 0.021429 |
| [-15,-10[ | -12.5 | 17 | 0.202381 | 0.392857 | 0.040476 |
| [-10,-5[ | -7.5 | 16 | 0.190476 | 0.583333 | 0.038095 |
| [-5,0[ | -2.5 | 26 | 0.309524 | 0.892857 | 0.061905 |
| [0,5] | 2.5 | 9 | 0.107143 | 1 | 0.021429 |
