ISO TR 7871-1997 PDF
Name in English:
St ISO TR 7871-1997
Name in Russian:
Ст ISO TR 7871-1997
Original standard ISO TR 7871-1997 in PDF full version. Additional info + preview on request
Full title and description
St ISO TR 7871-1997 — "Cumulative sum charts — Guidance on quality control and data analysis using CUSUM techniques". This technical report presents principles and practical guidance for constructing, presenting and interpreting cumulative sum (CUSUM) charts as tools for process monitoring and data analysis.
Abstract
Gives the principles of CUSUM charting and includes guidance on the preparation and interpretation of CUSUM charts using basic decision rules. The report covers chart preparation and presentation, rules for on-line monitoring and retrospective analysis, techniques for computing cumulative sums, and worked examples of applications.
General information
- Status: Withdrawn / superseded.
- Publication date: February 1997 (first edition).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 03.120.30 — Application of statistical methods.
- Edition / version: Edition 1 (1997).
- Number of pages: Recorded as 40 pages in the ISO catalogue (national reproductions/catalogues may show different pagination).
Scope
This technical report provides guidance on the use of cumulative sum (CUSUM) charts for quality control and data analysis. It describes the basic principles, how to prepare and present CUSUM charts, decision rules for both real‑time monitoring and retrospective analyses, calculation techniques for cumulative sums and illustrative application examples. The guidance is aimed at assisting practitioners in selecting and implementing basic CUSUM procedures rather than specifying mandatory requirements.
Key topics and requirements
- Principles of CUSUM charting and underlying statistical rationale.
- Preparation and presentation of CUSUM charts (plotting conventions and chart layout).
- Decision rules for on‑line surveillance and control (basic stopping/alert thresholds).
- Rules and methods for retrospective analysis of historical data.
- Computational techniques for cumulative sums and worked calculation examples.
- Guidance notes and illustrative application examples across typical process‑control contexts.
Typical use and users
Intended users include quality engineers, process control specialists, statisticians, data analysts, laboratory staff and consultants who apply statistical process control (SPC) methods. The report is used as a practical guide when selecting, implementing or interpreting CUSUM schemes for monitoring process performance and detecting small shifts in process level.
Related standards
This technical report has been superseded and its content incorporated into the ISO 7870 series; specifically ISO 7870‑4:2011 (Control charts — Part 4: Cumulative sum charts) replaces and expands upon ISO/TR 7871:1997. Users seeking current normative procedures for CUSUM charts should consult the ISO 7870 series and the most recent edition of Part 4.
Keywords
CUSUM, cumulative sum charts, control charts, statistical process control, SPC, process monitoring, decision rules, retrospective analysis, quality control, ISO TR 7871.
FAQ
Q: What is this standard?
A: ISO/TR 7871:1997 is a technical report titled "Cumulative sum charts — Guidance on quality control and data analysis using CUSUM techniques" that offers practical guidance on constructing and interpreting CUSUM control charts.
Q: What does it cover?
A: It covers the principles of CUSUM charting, preparation and presentation of charts, decision rules for monitoring and retrospective analysis, calculation techniques for cumulative sums, and worked examples to illustrate applications.
Q: Who typically uses it?
A: Quality and process engineers, statisticians, laboratory personnel, data analysts and SPC practitioners who need guidance in selecting and applying CUSUM techniques.
Q: Is it current or superseded?
A: ISO/TR 7871:1997 has been withdrawn and superseded by ISO 7870‑4:2011 (Control charts — Part 4: Cumulative sum charts); users should refer to the ISO 7870 series for the current normative guidance.
Q: Is it part of a series?
A: Yes — its subject (control charts) is part of the ISO 7870 series of documents on control charts; ISO/TR 7871 was an earlier technical report focused on CUSUM techniques and its content was later absorbed into Part 4 of ISO 7870.
Q: What are the key keywords?
A: CUSUM, cumulative sum, control charts, SPC, statistical process control, process monitoring, decision rules, retrospective analysis.