2007/01/30

是 "80/20" 還是 "長尾"?

隨手算一下昨天的點閱數來看看...

Num: 2520 (昨天有點閱數的部落格數)
Sum: 526156 (總點閱數)
Ave: 208 (平均)
252 (10%) is 401299 (76.27% to 76.27%) (now is 355)
504 (20%) is 458640 (10.90% to 87.17%) (now is 150)
756 (30%) is 486308 (5.26% to 92.43%) (now is 82)
1008 (40%) is 502387 (3.06% to 95.48%) (now is 49)
1260 (50%) is 512613 (1.94% to 97.43%) (now is 33)
1512 (60%) is 519148 (1.24% to 98.67%) (now is 20)
1764 (70%) is 523057 (0.74% to 99.41%) (now is 12)
2016 (80%) is 525042 (0.38% to 99.79%) (now is 5)
2268 (90%) is 525869 (0.16% to 99.95%) (now is 2)
2520 (100%) is 526156 (0.05% to 100.00%) (now is 1)
SD: 32.70

因此可以看得出來中位數是 33,
且不須要 20% 就可以占掉 80% 以上的點閱數,
只是還沒到 90/10 這麼嚴重, .....
但似乎看得出來不是長尾....

若我們來看週點閱數的話:
Num: 2901
Sum: 3403799
Ave: 1173
291 (10%) is 2600025 (76.39% to 76.39%) (now is 2082)
581 (20%) is 2987129 (11.37% to 87.76%) (now is 865)
871 (30%) is 3168158 (5.32% to 93.08%) (now is 454)
1161 (40%) is 3270284 (3.00% to 96.08%) (now is 268)
1451 (50%) is 3333041 (1.84% to 97.92%) (now is 167)
1741 (60%) is 3370891 (1.11% to 99.03%) (now is 97)
2031 (70%) is 3391683 (0.61% to 99.64%) (now is 48)
2321 (80%) is 3400667 (0.26% to 99.91%) (now is 17)
2611 (90%) is 3403032 (0.07% to 99.98%) (now is 4)
2901 (100%) is 3403799 (0.02% to 100.00%) (now is 1)
SD: 136.11

結果大家看得出來吧?

1 則留言:

【食夢黑貘】 提到...

這是昨天(02/09)的分佈

Num: 2659
Sum: 582838
Ave: 219
266 (10%) is 440009 (75.49% to 75.49%) (now is 365)
532 (20%) is 505006 (11.15% to 86.65%) (now is 160)
798 (30%) is 536698 (5.44% to 92.08%) (now is 87)
1064 (40%) is 555060 (3.15% to 95.23%) (now is 54)
1330 (50%) is 566518 (1.97% to 97.20%) (now is 34)
1596 (60%) is 573904 (1.27% to 98.47%) (now is 22)
1862 (70%) is 578569 (0.80% to 99.27%) (now is 13)
2128 (80%) is 581186 (0.45% to 99.72%) (now is 7)
2394 (90%) is 582454 (0.22% to 99.93%) (now is 3)
2659 (100%) is 582838 (0.07% to 100.00%) (now is 1)
SD: 32.20