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標題: Help to formulate the probabilty of a boy can draw into LS in the coming draw [打印本頁]

作者: edmondau.1 時間: 12-12-31 22:12 標題: Help to formulate the probabilty of a boy can draw into LS in the coming draw

Please help us to work out a formula of a boy can draw into say the La Salle Primary in the coming
" Luky Draw". Suppose all choices are LS College (primary).
Or base on past information that the probability of a boy/girl could be drew into a designed primary school in the coming June's Draw, Thank you +++

作者: cautionchan 時間: 12-12-31 22:29 標題: 回覆：Help to formulate the probabilty of a boy can draw into LS in the coming draw

冇，全靠lucky ! 自行都好D，不過呢個年代冇20分都唔使諗！

作者: cowboy2007 時間: 12-12-31 23:04 標題: 引用：Please+help+us+to+work+out+a+formula+of+

原帖由 edmondau.1 於 12-12-31 發表
Please help us to work out a formula of a boy can draw into say the La Salle Primary in the coming ...

No formal and Data ! It is only nothing but "Luck"

作者: MC1128 時間: 12-12-31 23:14

edmondau.1 發表於 12-12-31 22:12
Please help us to work out a formula of a boy can draw into say the La Salle Primary in the coming ...

好簡單,先搬入41校網,大抽獎時,甲乙均填LS首志願

每年教育局都會公布個別校網抽中首三志願的比率,你可以作粗略估算

再遲啲,派發統一抽獎資料時,你會具體知道LS學額,再對照41網學生人數,當一半是男生,又當全部首志願揀LS,便可計算中獎機會率

作者: cy664 時間: 13-1-1 09:30 標題: 回覆：Help to formulate the probabilty of a boy can draw into LS in the coming draw

上年的比例是多少呢？

作者: eyschoi 時間: 13-1-1 11:03

Theoretically, probability = n/
where n is the occurrence and N is the population.
In this case n is the no. of place for P1 lucky draw and N is no of application.
So for a particular school, you need to know the place remaining for lucky draw and the number of applicant.

作者: eyschoi 時間: 13-1-1 11:08

My mobile cannot edit the post.
It should be n/N

作者: momama 時間: 13-1-1 11:53 標題: 回覆：Help to formulate the probabilty of a boy can draw into LS in the coming draw

除非或然率係100%，否則唔中就係唔中

作者: evasoeeyy 時間: 13-1-2 12:00

MC1128 發表於 12-12-31 23:14
好簡單,先搬入41校網,大抽獎時,甲乙均填LS首志願

每年教育局都會公布個別校網抽中首三志願的比率,你可以 ...

這個方法最正路, 如果只靠甲部誇區, 機會好微, 但最後是靠LUCKY,

作者: amber.h 時間: 13-1-2 14:56

我反而想知道個 "勸退率" 有幾高。

作者: cautionchan 時間: 13-1-2 15:57 標題: 回覆：Help to formulate the probabilty of a boy can draw into LS in the coming draw

Really good question ! Just heard someone 勸退！is it really true ?

作者: LisaL 時間: 13-1-2 17:51

真有其事? 好想知喎!

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