Hypothesis testing being used for deducing checkout discrepancy of laboratories
Xie Tian-quan · Metallurgical Standardization & Quality · 2006
Hypothesis testing is a usual method of statistical technique,which is used for deducing checkout discrepancy of laboratories.With regard to quality management,hypothesis testing is adopted to deduce whether the overall changes or not while production processes,incoming materials or process parameters are varied.This article takes an example of monthly internal and external quality checking results from sub-laboratory and parent laboratory in certain company.