手法を比較

	リスクベース管理図	プロセス能力解析 (Cp, Cpk)
分野	実験計画法	統計学
系統	Process / pipeline	Process / pipeline
提唱年	1956 (economic design); refined through 1980s–2000s	1986
提唱者	A. J. Duncan (economic design, 1956); T. J. Lorenzen & L. C. Vance (unified economic model, 1986)	Victor Kane
種類	Quantitative process monitoring method	Quantitative process evaluation index
原典	Lorenzen, T. J., & Vance, L. C. (1986). The economic design of control charts: A unified approach. Technometrics, 28(1), 3–10.	Kane, V. E. (1986). Process capability indices. Journal of Quality Technology, 18(1), 41–52.
別名	economic control chart, risk-integrated SPC, cost-based control chart, economic design of control charts	Process Capability Indices, Capability Study, Süreç Yeterlilik Analizi, Process Performance Analysis
関連	6	2
概要	A risk-based control chart extends the classical Shewhart control chart by explicitly incorporating the costs and probabilities of two error types — false alarms (Type I) and missed shifts (Type II) — along with sampling costs, into the design of chart parameters. Rather than using arbitrary 3-sigma limits, the method selects sample size, sampling interval, and control limits to minimise the total expected cost or risk of operating the monitoring scheme.	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.