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2.概率论-概率论公理
2022-06-23 06:49:00 【PacosonSWJTU】
【README】
本文总结自《概率论基础教程》 by M.Ross ,墙裂推荐;
【2.2】样本空间和事件
1)样本空间
- 所有可能的结果构成的集合,称为该实验的样本空间,记为S;
2)事件(一个集合,或样本空间的子集)
- 样本空间的任一子集E称为事件;或样本空间中选取若干个结果构成的集合E;
- 如果试验结果包含在事件E里面,则说事件E发生了;
3)事件并与交
同一个样本空间S的任意两个事件E,F;
定义一个新事件 E∪F,它有以下结果组成: 这些结果在E中,或在F中,或既在E中也在F中;
- 事件E∪F:称为事件E和事件F的并;
- 事件E∩F或事件EF:称为事件E和事件F的交;
- 若 EF=∅,则称 事件E与事件F是互不相容的;
4)n个事件的并与交

5)事件E的补
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6)事件包
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