| 胡纯严,胡良平.如何正确运用χ2检验——三种双向无序二维列联表资料的χ2检验[J].四川精神卫生杂志,2021,34(2):111-115.Hu Chunyan,Hu Liangping,How to use χ2 test correctly—— χ2 tests for the data collected from the three kinds of two dimensional contingency tables without ordinal variables in two directions[J].SICHUAN MENTAL HEALTH,2021,34(2):111-115 |
| 如何正确运用χ2检验——三种双向无序二维列联表资料的χ2检验 |
| How to use χ2 test correctly—— χ2 tests for the data collected from the three kinds of two dimensional contingency tables without ordinal variables in two directions |
| 投稿时间：2021-03-16 |
| DOI：10.11886/scjsws20210316003 |
| 中文关键词: 二维列联表 前提条件 独立性 χ2检验 SAS软件 R软件 |
| 英文关键词:Two-dimensional contingency table Prerequisites Independence χ2 test SAS software R software |
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| 中文摘要: |
| 本文目的是介绍除四格表资料之外的三种双向无序二维列联表资料的χ2检验以及SAS与R软件实现的方法。三种双向无序二维列联表是指双向无序的“R×2”“2×C”和“R×C”（R与C均大于2）列联表。一般来说，分析它们的目的都是检验列联表中两属性变量是否独立，在满足特定前提条件时，可以选用的简单统计分析方法为χ2检验；在不满足特定前提条件时，应当选择计算量非常大的Fisher’s精确检验法。 |
| 英文摘要: |
| The purpose of this article was to introduce the χ2 test and SAS and R software implementation of three kinds of two-way unordered two-dimensional contingency table data except the four-fold table data. The three kinds of the tables referred to the two-way unordered “R×2”“2×C” and “R×C” （both R and C were greater than 2） contingency tables. Generally speaking， the purpose of analyzing them was to test whether the two attribute variables in the contingency table were independent. When certain prerequisites were met， the simple statistical analysis method that could be used was the χ2 test， when the specific prerequisites were not met， the Fisher’s exact test， which required the large amount of calculation， should be selected. |
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