เปรียบเทียบวิธี

	การขยายหน้าที่เชิงคุณภาพ	การควบคุมกระบวนการเชิงสถิติ
สาขาวิชา	การออกแบบการทดลอง	การออกแบบการทดลอง
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1966 (Japan); popularised in the West ~1988	1924–1931
ผู้ริเริ่ม	Yoji Akao	Walter A. Shewhart
ประเภท	Structured quality planning and product design method	Process monitoring and quality control method
แหล่งต้นตำรับ	Akao, Y. (Ed.). (1990). Quality Function Deployment: Integrating Customer Requirements into Product Design. Productivity Press. ISBN: 978-0915299416	Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. ISBN: 978-0873890762
ชื่อเรียกอื่น	QFD, House of Quality, customer-driven engineering, voice of the customer matrix	SPC, statistical quality control, process control charting, Shewhart control
ที่เกี่ยวข้อง	4	6
สรุป	Quality Function Deployment (QFD) is a structured method for translating customer needs — the voice of the customer — into specific technical requirements at every stage of product or service development. Originating in Japan in the 1960s, QFD uses a matrix-based tool called the House of Quality to make customer priorities visible, link them to engineering parameters, expose trade-offs, and maintain focus on what customers actually value throughout the design process.	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.