Standard Svensk standard · SS-ISO 7873:2005

Styrdiagram för aritmetiskt medelvärde med varningsgränser (ISO 7873:1993, IDT)

Status: Gällande

Omfattning
This International Standard 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 a 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 assumtion of a normal distribution is not necessary for cantrol purposes (see 4.2).

Ämnesområden

Användning av statistiska metoder Kvalitetsteknik


Produktinformation

Språk: Engelska

Framtagen av: SIS - Ledningssystem

Internationell titel: Control charts for arithmetic average warning limits (ISO 7873:1993, IDT)

Artikelnummer: STD-39903

Utgåva: 1

Fastställd: 2005-05-31

Antal sidor: 16