เปรียบเทียบวิธี

	Robust Control Chart	การวิเคราะห์ความสามารถของกระบวนการ (Cp, Cpk)
สาขาวิชา	การออกแบบการทดลอง	สถิติศาสตร์
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1989–1997 (foundational period)	1986
ผู้ริเริ่ม	David M. Rocke; L. G. Tatum (key contributors)	Victor Kane
ประเภท	Statistical process monitoring technique	Quantitative process evaluation index
แหล่งต้นตำรับ	Tatum, L. G. (1997). Robust estimation of the process standard deviation for control charts. Technometrics, 39(2), 127–141.	Kane, V. E. (1986). Process capability indices. Journal of Quality Technology, 18(1), 41–52.
ชื่อเรียกอื่น	robust Shewhart chart, outlier-resistant control chart, robust SPC chart, distribution-free control chart	Process Capability Indices, Capability Study, Süreç Yeterlilik Analizi, Process Performance Analysis
ที่เกี่ยวข้อง	6	2
สรุป	A robust control chart replaces the classical mean and standard deviation estimators in a Shewhart-style chart with resistant alternatives — such as the median and median absolute deviation (MAD) — so that a small fraction of outliers or non-normal process data cannot distort the control limits. The approach preserves the real-time monitoring logic of standard control charts while protecting against inflated or deflated limits caused by contaminated Phase I reference data.	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.