ISO 7873:1993
Control charts for arithmetic average with warning limits
Reference number
ISO 7873:1993
Edition 1
1993-12
Withdrawn
ISO 7873:1993
14806
Withdrawn (Edition 1, 1993)

Abstract

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.

General information

  •  : Withdrawn
     : 1993-12
    : Withdrawal of International Standard [95.99]
  •  : 1
     : 13
  • ISO/TC 69/SC 4
    03.120.30 
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