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ISO 7870-4:2021

Control charts — Part 4: Cumulative sum charts

Publication date:   Sep 21, 2021

General information

90.20   Standard under periodical review   Jul 15, 2026

ISO

ISO/TC 69/SC 4 Applications of statistical methods in product and process management

International Standard

03.120.30   Application of statistical methods

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Scope

This document describes statistical procedures for setting up cumulative sum (CUSUM) schemes for process and quality control using variables (measured) and attribute data. It describes general‑purpose methods of decision-making using cumulative sum (CUSUM) techniques for monitoring, control and retrospective analysis.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 7870-4:2011

NOW

PUBLISHED
ISO 7870-4:2021
90.20 Standard under periodical review
Jul 15, 2026