方差分析法浅析——单因素的方差分析

浅析了方差分析法的基本原理和方差分析的意义:方差分析就是将总的方差分解为各个方差的成分,然后利用显著性检验法进行分析判断和做出适当的结论;详细地讲解、介绍了单因素的方差分析法,回答了学生提出的如何判断一个实验者使用几种不同的方法去测定某种试样的成分或每一参数,每一种方法都重复测定几次;如何判断几种不同的方法所得的几个平均值之间是否存在差异,哪一个平均值准确可靠的问题。

Discussion of Variance Analysis:the Single Factor Variance Analysis

In this paper, the principle and importance of variance analysis are discussed. The variance analysis includes decomposition of general variance into each component part and analyzing and making conclusions by the use of test of significance approach. The single factor variance analysis is explained in detail. Several questions raised by students are also answered including how to judge whether there is a difference among the average values using different methods and which average value is more reliable when a researcher determines the components or parameters of a specimen using different methods.