| Frequency Table (Histogram) | |||||
| Bins | Midpoint | Abs. Frequency | Rel. Frequency | Cumul. Rel. Freq. | Density |
| [-25,-20[ | -22.5 | 4 | 0.055556 | 0.055556 | 0.011111 |
| [-20,-15[ | -17.5 | 9 | 0.125 | 0.180556 | 0.025 |
| [-15,-10[ | -12.5 | 16 | 0.222222 | 0.402778 | 0.044444 |
| [-10,-5[ | -7.5 | 23 | 0.319444 | 0.722222 | 0.063889 |
| [-5,0[ | -2.5 | 17 | 0.236111 | 0.958333 | 0.047222 |
| [0,5] | 2.5 | 3 | 0.041667 | 1 | 0.008333 |
