2. Process variability
The use of simple statistical techniques to manage a manufacturing process enables :
to prevent the effects of maladjustments instead of suffering them and to sort production a posteriori;
avoid 100% control (control of all units produced);
rationalize sampling plans (number and frequency of checks) rather than choosing them "by experience" (often by inspiration).
These statistical techniques use the method of evaluation by checking a sample limited to a few units (n) to estimate the mean value and dispersion of all the units produced. For the chosen characteristic X, the average
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Process variability
Capability of a means of production, a process, a means of measurement
Bibliography
Reference
Other
Standardization
- Sampling rules for attribute checks – Part 1: sampling procedures for lot-by-lot inspection, indexed by acceptable quality level (AQL). - NF ISO 2859-1 - 4-00
- Sampling rules for attribute checks – Part 3: Partial successive sampling procedures. - NF ISO 2859-1 - 10-05
- Sampling rules for attribute checks – Part 4: procedures for assessing declared quality levels. - NF ISO 2859-4 - 5-03
- Sampling rules...
Organizations
Mouvement français pour la qualité (MFQ) http://www.mfq-fc.asso.fr
American Society for Quality (ASQ) http://www.asq.org
European Organization for Quality (EOQ) http://www.eoq.org
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