摸球的次数n | 100 | 150 | 200 | 500 | 800 | 1000 |
摸到黑球的次数m | 42 | 54 | 84 | 205 | 328 | 401 |
摸到黑球的频率 | 0.42 | 0.3 | 0.42 | 0.41 | 0.41 | 0.401 |