Statistical control state Comprehensive Analysis of SPC Basics: The Path of Statistical Control from Process Management and Control to Quality Stability This article conducts a comprehensive analysis around SPC (Statistical Process Control). First, it introduces its core definition... Accidental variationSolve problems throughout the process From its origin to global practice, the control chart has led the digital transformation of industrial quality management. This article focuses on the control chart... Process capability assessmentThe principle of "three lines and one area" Analysis of the application conditions and suitable scenarios for various statistical analysis methods such as Cpk and Cpm This article elaborates in detail on the application conditions of various statistical analysis methods. The application of Cpk requires a stable process... Non-normal data transformationNormal distribution assumption Analysis of the quality control and abnormal judgment strategies in the process of shifting from an unstable state to a stable state in control chart logic When the process starts, it is often in an unsteady state... Control chart for controlProcess capability index