抽取的产品数 | 20 | 50 | 100 | 200 | 500 | 1000 | 1500 | 2000 |
优等品频数 | 18 | 48 | 96 | 193 | 473 | 953 | 1424 | 1902 |
优等品频率 | 0.900 | 0.960 | 0.960 | 0.965 | 0.946 | 0.953 | 0.949 | 0.951 |
抛掷次数n | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 1000 |
“正面朝上”的频数m | 63 | 151 | 221 | 289 | 358 | 429 | 497 | 566 | 701 |
“正面朝上”的频率m/n | 0.630 | 0.755 | 0.737 | 0.723 | 0.716 | 0.715 | 0.710 | 0.708 | 0.701 |