STN EN ISO 4259-4
| Name: | STN EN ISO 4259-4 |
| Validity: | Withdrawn |
| Number of pages: | 48 |
| Language: |
EN
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| Slovak title | Ropné výrobky a príbuzné výrobky. Zhodnosť metód merania a výsledkov merania. Časť 4: Použitie štatistických regulačných diagramov na validáciu štatisticky zvládnutého stavu pri používaní normalizovanej skúšobnej metódy v jednom laboratóriu (ISO 4259-4: 2021, opravená verzia 2023-10) |
| English title | Petroleum and related products - Precision of measurement methods and results - Part 4: Use of statistical control charts to validate `in-statistical-control` status for the execution of a standard test method in a single laboratory (ISO 4259-4:2021, Corrected version 2023-10) |
| Release Date: | 01. 02. 2024 |
| Date of withdrawal: | 01. 08. 2024 |
| ICS: | 75.080 |
| Sorting character/National clasification code | 65 6004 |
| Level of incorporation: | idt EN ISO 4259-4:2022, idt ISO 4259-4 Corrected version 2023-10:2021 |
| Official Journal | 01/24 |
| Amendments | |
| Replaced by: | STN EN ISO 4259-4:2024-08 (65 6004) |
| Repleces: | STN EN ISO 4259-4:2022-09 (65 6004) |
| Note in Official Journal: | |
| Subject of the standard: | This document specifies the process and methodology for the construction, operation, and maintenance of statistical control charts to assess if a laboratory's execution of a standard test method is in-statistical-control and how to establish and validate the 'in-statistical-control' status. It specifies control charts that are most appropriate for ISO/TC 28 test methods where the dominant common cause variation is associated with the long term, multiple operator conditions. The control charts specified for determination of in-statistical-control are: individual (I), moving range of 2 (MR2), and either the exponentially weighted moving average (EWMA) or zone-based run rules [similar to Western Electric (WE) run rules[3]] as sensitivity enhancement strategy to support the I-chart. |
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