二实践是检验真理的唯一标准，但不是检验真理的全部过程。为完成检验过程和实现检验目的，还必须运用统计方法。统计是实践与真理之间的中间变量，是联系实践与真理之间的桥梁。一个完整的检验过程通常包括四个依次进行、前后衔接的阶段。第一个阶段是对有待检验的认识或真理 Practice is the only test of truth, but not the whole process of testing the truth. To complete the inspection process and to achieve the purpose of inspection, but also the use of statistical methods. Statistics is an intermediate variable between practice and truth and a bridge between practice and truth. A complete inspection process usually consists of four stages, one after another, before and after the convergence. The first stage is the knowledge or truth to be tested