: Continuous measurements like length, weight, or temperature.
: Random, inherent fluctuations in a stable process. Statistical Process Control, Reference Manual
The is a foundational resource, primarily developed by the Automotive Industry Action Group (AIAG) , that provides standardized guidelines for monitoring and improving manufacturing quality. Overview of the SPC Reference Manual : Continuous measurements like length
: Categorical counts, such as "pass/fail" or the number of surface scratches. Typical Implementation Steps SPC-3 | Statistical Process Control - AIAG or temperature. : Random
: The primary tool for monitoring stability over time.
: Originally created by a task force including Chrysler, Ford, and General Motors, it standardizes the technical nomenclature and reporting formats used across the automotive supply chain.