เปรียบเทียบวิธี
ดูวิธีที่เลือกเทียบกันแบบเคียงข้าง แถวที่ต่างกันจะถูกเน้นไว้
| แผนภูมิควบคุม× | Six Sigma DMAIC× | |
|---|---|---|
| สาขาวิชา≠ | การออกแบบการทดลอง | การจัดการคุณภาพ |
| ตระกูล | Process / pipeline | Process / pipeline |
| ปีกำเนิด≠ | 1924 (first use); 1931 (seminal book) | 2014 |
| ผู้ริเริ่ม≠ | Walter A. Shewhart (Bell Labs) | Motorola; Pyzdek & Keller |
| ประเภท≠ | Statistical monitoring and control technique | Structured process improvement methodology |
| แหล่งต้นตำรับ≠ | Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. link ↗ | Pyzdek, T., & Keller, P. (2014). The Six Sigma Handbook (4th ed.). McGraw-Hill. ISBN: 978-0-07-184053-9 |
| ชื่อเรียกอื่น | Shewhart chart, process-behavior chart, SPC chart, quality control chart | DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC |
| ที่เกี่ยวข้อง≠ | 6 | 3 |
| สรุป≠ | A control chart is a time-series graph with statistically derived upper and lower control limits that separates the natural, random variation of a process (common cause) from unusual, assignable variation (special cause). Invented by Walter Shewhart at Bell Labs in 1924, control charts remain the foundational tool of Statistical Process Control and are used across manufacturing, healthcare, software, and service industries to monitor whether a process remains stable and predictable over time. | Six Sigma DMAIC is a data-driven, five-phase process improvement methodology — Define, Measure, Analyze, Improve, and Control — used to reduce defects and process variation to fewer than 3.4 defects per million opportunities. Originating at Motorola in the 1980s and systematized by practitioners including Pyzdek and Keller, it is widely adopted in manufacturing, healthcare, finance, and service industries seeking sustained quality gains. |
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