作者skyslee (現實的翅膀)
看板Eng-Class
標題[考題] stated as odds is...
時間Mon Jun 4 22:19:57 2012
題目是:
The probability that the DJIA will increase tomorror is 2/3.
The probability of an increase in the DJIA stated as odds is ____.
Ans: two-to-one
想請問的是,第一句的意思是:明天DJIA漲的機率是2/3
第二句就不懂了
查了一下stated as odd指的是相反的意思
所以答案應該是1/3吧?
解答算法卻是
2/3
___ = 2/1
1/3
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推 l10nel:odds是事件發生與事件不發生的比率,所以2:1或2/1沒錯。 06/05 16:08
→ l10nel:stated as odds: 上漲機率以odds比率加以表示 06/05 16:09