Résumé
Specifies procedures for the statistical control of processes by using control charts based on calculating the arithmetic average of a sample and using warning limits and action limits. It is assumed that for large lots and for the mass output of piece and batch production, such a measure of quality is a random variable following a normal distribution. However, when averages of four or more items are plotted, this assumption of a normal distribution is not necessary for control purposes.
Informations générales
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État actuel: AnnuléeDate de publication: 1993-12Stade: Annulation de la Norme internationale [95.99]
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Edition: 1Nombre de pages: 14
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Comité technique :ISO/TC 69/SC 4ICS :03.120.30
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