tree diagram

2009-06-01 12:02 am
我完全唔明tree diagram攞黎做乜呀,又唔識畫,有冇人可以清楚咁解釋比我聽呀?!

我有一條問題唔識!
Bag A contains 2red,2yellow,1blue ball; BagB contains 1red,1yellow.
if one ball is chosen from bag A and one ball is chosen from bagB randomly,
*draw a tree diagram to represent all the possible outcomes..
thank you!!

回答 (1)

2009-06-01 5:09 am
✔ 最佳答案
The tree diagram is as follows:


圖片參考:http://i726.photobucket.com/albums/ww265/physicsworld2010/physicsworld01May312106.jpg?t=1243775239



tree diagram所做的事情,是要將所有可能的事件(events)列出,並在branch上寫上其發生的機率。如bag A的red就是0.4,因5個球中有2個紅球,所以有0.4的機率抽到紅球。

畫這個圖是要清楚給人看到所有可能性,從而清晰自己的思路,不會計錯。



參考: Physics king


收錄日期: 2021-04-19 14:27:28
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