生产试验中经常处理测量数据。同一个实验室,甚至同一个人,在完全相同的条件下重复进行同一试验,获得一组描述同一物性的数据(统计学中叫做样本或子样,无限多个数据的具体意义就是一个总体或母体),这些数据会有波动,有差异,从不同试验室所得的数据之间会有更大的差异。如果这些差异纯属随机误差所 Measurement data is often processed in production tests. The same laboratory, or even the same person, repeats the same experiment under exactly the same conditions to obtain a set of data describing the same physical property (in statistics, called a sample or subsample, the specific meaning of an infinite number of data is an overall or a parent. ) These data will fluctuate and vary, and there will be greater differences between the data obtained from different laboratories. If these differences are purely random errors