เปรียบเทียบวิธี

	Six Sigma DMAIC	การวิเคราะห์ความสามารถของกระบวนการ (Cp, Cpk)
สาขาวิชา	การจัดการคุณภาพ	สถิติศาสตร์
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	2014	1986
ผู้ริเริ่ม	Motorola; Pyzdek & Keller	Victor Kane
ประเภท	Structured process improvement methodology	Quantitative process evaluation index
แหล่งต้นตำรับ	Pyzdek, T., & Keller, P. (2014). The Six Sigma Handbook (4th ed.). McGraw-Hill. ISBN: 978-0-07-184053-9	Kane, V. E. (1986). Process capability indices. Journal of Quality Technology, 18(1), 41–52.
ชื่อเรียกอื่น	DMAIC Framework, Six Sigma Process Improvement Cycle, Define-Measure-Analyze-Improve-Control, Altı Sigma DMAIC	Process Capability Indices, Capability Study, Süreç Yeterlilik Analizi, Process Performance Analysis
ที่เกี่ยวข้อง	3	2
สรุป	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.	Process Capability Analysis quantifies how well a manufacturing or business process produces output within specified tolerance limits. Introduced formally by Victor Kane in 1986, it summarises process spread and centering into dimensionless indices — most notably Cp and Cpk — allowing engineers and quality managers to judge whether a stable process is inherently capable of meeting customer or design specifications consistently.