摘要
本文的目的是简要介绍与Z检验有关的基本概念和理论基础。基本概念涉及五个方面的内容:①何为Z检验;②何为正态分布;③Z检验的前提条件;④Z检验的适用场合;⑤Z分位数的适用场合。理论基础涉及两个方面的内容:正态分布与其他概率分布之间的关系以及正态分布可用于某些其他概率分布的近似计算。
The purpose of this article was to briefly introduce the basic concepts and the theoretical fundamentals related to the Z test.The basic concepts involved to five contents as follows:Firstly,what is the Z test;Secondly,what is normal distribution;Thirdly,the preconditions of the Z test;Fourth,the occasion applicable of the Z test;Fifth,the occasion applicable of the Z quantile.The theoretical fundamentals were concerned with the following two aspects:one was the relationships between the normal distribution and the other probability distributions,the other was that the normal distribution could be applied to the approximate calculation for the other probability distributions.
作者
胡良平
Hu Liangping(Graduate School,Academy of Military Sciences PLA China,Beijing 100850,China;Specialty Committee of Clinical Scientific Research Statistics of World Federation of Chinese Medicine Societies,Beijing 100029,China)
出处
《四川精神卫生》
2020年第5期418-421,共4页
Sichuan Mental Health
关键词
Z检验
概率密度函数
分布函数
正态分布
线性参数统计模型
Z test
Probabilitydensity function
Distributional function
Normal distribution
Linear parametric statistical model
