《高中數(shù)學(xué) 第二章 概率 2.3 條件概率與獨立事件 2.3.1 條件概率課件 北師大版選修23》由會員分享，可在線閱讀，更多相關(guān)《高中數(shù)學(xué) 第二章 概率 2.3 條件概率與獨立事件 2.3.1 條件概率課件 北師大版選修23（22頁珍藏版）》請在裝配圖網(wǎng)上搜索。

1、3 3條件概率與獨立事件條件概率與獨立事件第1 1課時條件概率目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知

2、識梳理1.理解條件概率的定義,掌握條件概率的計算方法.2.利用條件概率公式解決一些簡單的實際問題.目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLI

3、AN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理【做一做1】

4、條件概率P(B|A)表示()A.事件B與事件A的概率之差B.事件B與事件A的概率之商C.事件B與事件A的概率之積D.在事件A發(fā)生的條件下,事件B發(fā)生的概率答案:D目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳

5、理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGY

6、ANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三【例1】 盒中裝有5個產(chǎn)品,其中3個一等品,2個二等品,不放回地從中取產(chǎn)品,每次取1個.求:(1)取兩次,兩次都取得一等品的概率;(2)取兩次,第二次取得一等品的概率;(3)取兩次,已知第二次取得一等品的條件下,第一次取得的是二等品的概率.分析:由于是不放回地從中取產(chǎn)品,所以第二次抽取受到第一次的影響,因而是條件概率,應(yīng)用條件概率中的乘法公式求解.目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGY

7、ANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHU

8、LI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三反思條件概率的判斷:當(dāng)題目中出現(xiàn)“在前提下(條件)”等字眼時,一般為條件概率;題目中沒有出現(xiàn)上述字眼,但已知事件的發(fā)生影響了所求事件的概率,一般也認(rèn)為是條件概率.對于古典概型類題目,可采用縮減基本事件總數(shù)的辦法來計算, 表示事件AB包含的基本事件個數(shù),n(A

9、)表示事件A包含的基本事件個數(shù).目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三【變式

10、訓(xùn)練1】 (1)某校高二(1)班有學(xué)生56人,其中籃球愛好者25人.全班分成4個小組,第一組有學(xué)生16人,其中籃球愛好者7人.從該班任選一人作為學(xué)生代表.選到的是第一組的學(xué)生的概率是,已知選到的是籃球愛好者,他是第一組學(xué)生的概率是.目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典

11、例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂

12、演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三【例2】 在某次考試中,要從20道題中隨機地抽出6道題,若考生至少能答對其中4道題即可通過,至少能答對其中5道題就獲得優(yōu)秀.已知某考生能答對其中10道題,并且知道他在這次考試中已經(jīng)通過,求他獲得優(yōu)秀成績的概率.分析:考生成績優(yōu)秀包括兩種情形:該考生答對5道題或6道題,這兩種情形是互斥的,在該考生考試通過的前提下,求獲優(yōu)秀的概率.只需利用條件概率的性質(zhì)求解.目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演

13、練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)

14、導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三反思(1)條件概率的性質(zhì):若B與C是兩個互斥事件,則P(BC|A)=P(B|A)+P(C|A).(2)當(dāng)所求事件的概率相對較復(fù)雜時,往往把該事件分成兩個(或多個)

15、互不相容的較簡單的事件之和,求出這些簡單事件的概率,再利用P(BC)|A)=P(B|A)+P(C|A)便可求得較復(fù)雜事件的概率.目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典

16、例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理題型一題型二題型三目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂

17、演練ZHISHISHULI知識梳理題型一題型二題型三易錯點“條件概率P(B|A)”與“積事件的概率P(AB)”混淆【例3】 袋中有6個黃色、4個白色的乒乓球,不放回抽取,每次任取一球,取兩次,求第二次才取到黃球的概率.目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUIT

18、ANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理123456目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISH

19、ULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理123456目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI

20、典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理1234563.兩位工人加工同一種零件共100個,甲加工了40個,其中35個是合格品,乙加工了60個,其中有50個合格,令事件A為“從100個產(chǎn)品中任意取一個,取出的是合格品”,事件B為“從100個產(chǎn)品中任意取一個,取到甲生產(chǎn)的產(chǎn)品”,則P(A|B)等于()目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透

21、析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理123456目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHI

22、SHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理123456目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航知識梳理典例透析隨堂演練目標(biāo)導(dǎo)航目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理目標(biāo)導(dǎo)航DIANLITOUXI典例透析SUITANGYANLIAN隨堂演練ZHISHISHULI知識梳理123456