在正交设计中,分析试验数据常用极差法,即直观分析法。极差法计算简单,直观易懂,是便于推广的一种分析方法。但是,极差法没有把试验过程中由于试验条件的改变所引起的考核指标的数据波动,与由试验误差所引起的数据波动区别开来;同时也不能判断所考察的因素的作用是否显著。为 In the orthogonal design, the commonly used method of analyzing the experimental data is the intuitive method. The range calculation method is simple, intuitive and easy to understand, and it is an analysis method that is easy to promote. However, the range method does not distinguish between the data fluctuations of the assessment indicators caused by changes in the test conditions during the testing process and the data fluctuations caused by the experimental errors; at the same time, it cannot judge whether the effect of the investigated factors is significant. for