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概率论与数理统计(4)——假设检验 - Zemdalk's blog

https://zemdalk.github.io/2021/11/30/%E6%A6%82%E7%8E%87%E8%AE%BA%E4%B8%8E%E6%95%B0%E7%90%86%E7%BB%9F%E8%AE%A1-4-%E5%81%87%E8%AE%BE%E6%A3%80%E9%AA%8C.html

第八章 假设检验8.1 假设检验又叫“显著性检验”。举个例子,研究新冠疫苗对预防新冠是否有效,我们将被试随机分为两组,一组注射新冠疫苗,另一组注射葡萄糖。原假设:疫苗无效备择假设:疫苗有效如果注射疫苗组的发病率

概率论与数理统计(二)——样本与抽样分布 - Zemdalk's blog

https://zemdalk.github.io/2021/11/18/%E6%A6%82%E7%8E%87%E8%AE%BA%E4%B8%8E%E6%95%B0%E7%90%86%E7%BB%9F%E8%AE%A1-%E6%A0%B7%E6%9C%AC%E4%B8%8E%E6%8A%BD%E6%A0%B7%E5%88%86%E5%B8%83.html

第六章 样本与抽样分布6.1 随机样本 总体:试验的全部可能观察值,如一批灯泡(的寿命)。对应一个随机变量$X$。 个体:总体中的每个观察值,如每一个灯泡。 容量:总体中包含个体的数量。如一批灯泡的数量。 总体分布:数量指标取不同数值的比率。考虑一批灯泡的寿命...

写在博客搭建一段时间后 - Zemdalk's blog

https://zemdalk.github.io/2021/11/14/%E5%86%99%E5%9C%A8%E5%8D%9A%E5%AE%A2%E6%90%AD%E5%BB%BA%E4%B8%80%E6%AE%B5%E6%97%B6%E9%97%B4%E5%90%8E.html

总之,在互联网的海洋中有一块专属于自己的小天地,总感觉这才算真正地在互联网中安了家。这个博客搭建起来也有一段时间了,今天期中考试结束,应该写点什么来记录一下。就从我搭建博客的动机开始吧。很早我就觉得在QQ空间和朋友圈发的贴文都是碎片化的、快餐式的,虽然这样能即时分享自己的想法和乐趣,但是总感觉还缺少了些个人的思考...

光学(1)——对第四章作业题的总结 - Zemdalk's blog

https://zemdalk.github.io/2021/12/02/%E5%85%89%E5%AD%A6-1-%E7%AC%AC%E5%9B%9B%E7%AB%A0%E4%BD%9C%E4%B8%9A%E9%A2%98.html

光学第四章(光的衍射)涉及知识点很多。钟志萍老师的习题涉及到其中一部分知识点,现对作业做一总结,给出对应的知识点,并对部分习题给出解答。注意:知识点肯定没有完全囊括在作业题里,比如傅里叶光学就没有涉及。 课本:《大学物理通用教程(第二版):光学》,钟锡华、陈熙谋主编,北京大学出版社,ISBN 978730118...

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