MEASUREMENT UNCERTAINTY AND METROLOGICAL CONFIRMATION IN DOCUMENTED QUALITY SYSTEMS

The effect of measurement uncertainty on esti- mates and decisions performed under a regime of quality con- trol and improvement, is considered in this paper. Standard statistical quality tools are analyzed such as control charts and instrument calibration procedures. Their performance is characterized under the assumption of both Gaussian and uni- formly distributed measurement uncertainty. Exact and ap- proximate expressions are derived that allow the design of suitable procedures including the contribution of measurement uncertainty.