第3章节概率概率分布与抽样分布课件(5560KB).ppt

下载文档

9
0
约2.51万字
约 172页
2018-03-29 发布于广东
举报
版权申诉
保障服务

第3章节概率概率分布与抽样分布课件(5560KB).ppt

1、本文档共172页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

* * As a result of this class, you will be able to ... * * * * * * * * * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * * * * As a result of this class, you will be able to ... * * 3 * * * As a result of this class, you will be able to ... * * As a result of this class, you will be able to ... * * * As a result of this class, you will be able to ... * * * * * * * * * As a result of this class, you will be able to ... * * * * * * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * * * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * * As a result of this class, you will be able to ... * As a result of this class, you will be able to ... * * * As a result of this class, you will be able to ... * * As a result of this class, you will be able to ... * * 中心极限定理(central limit theorem) * 当样本容量足够大时(n ? 30) ，样本均值的抽样分布逐渐趋于正态分布从均值为?，方差为? 2的一个任意总体中抽取容量为n的样本，当n充分大时，样本均值的抽样分布近似服从均值为μ、方差为σ2/n的正态分布一个任意分布的总体 x 中心极限定理 (central limit theorem) * ?x 的分布趋于正态分布的过程资料：统计量的参数符号 * 名称样本总体定义从总体中抽出的部分单位数研究对象的全部单位总数特征统计量参数符号样本容量：n 样本平均数：样本比例：p 样本标准差：s 样本方差: 总体容量：N 总体平均数：μ 总体比例：π 总体标准差：σ 总体方差：练习：p1181 18、20、24 18、 ⑴ 20, 2； ⑵ 近似正态； ⑶ -2.25； ⑷ 1.50。 20、 ⑴ 0.