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| Robust Statistical Process Control× | Tilastollinen prosessinohjaus (SPC)× | |
|---|---|---|
| Tieteenala | Koesuunnittelu | Koesuunnittelu |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1989–1990s (formalized in peer-reviewed literature) | 1924–1931 |
| Kehittäjä≠ | Rocke, D. M.; Tatum, L. G. (key contributors) | Walter A. Shewhart |
| Tyyppi≠ | Robust statistical monitoring framework | Process monitoring and quality control method |
| Alkuperäislähde≠ | Tatum, L. G. (1997). Robust estimation of the process standard deviation for control charts. Technometrics, 39(2), 127–141. DOI ↗ | Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. ISBN: 978-0873890762 |
| Rinnakkaisnimet | Robust SPC, Resistant SPC, Outlier-robust process monitoring, Robust process surveillance | SPC, statistical quality control, process control charting, Shewhart control |
| Liittyvät≠ | 5 | 6 |
| Tiivistelmä≠ | Robust Statistical Process Control (Robust SPC) is an engineering quality-monitoring framework that replaces the classical mean and standard deviation estimators used in Shewhart-type control charts with outlier-resistant alternatives — such as the median, MAD, or trimmed statistics — so that isolated contaminating observations or non-normal process distributions do not inflate control limits and mask genuine process shifts. | Statistical Process Control (SPC) is a data-driven quality method that uses statistical techniques — primarily control charts — to monitor a manufacturing or service process over time. By distinguishing natural process variation (common cause) from unusual, actionable variation (special cause), SPC enables practitioners to maintain processes in a stable, predictable state and to detect problems early, before defective output reaches customers. |
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