Σύγκριση μεθόδων

	Διάγραμμα Ελέγχου Πολλαπλών Αποκρίσεων	Στατιστικός Έλεγχος Διεργασιών
Πεδίο	Πειραματικός Σχεδιασμός	Πειραματικός Σχεδιασμός
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1947 (Hotelling T²); 1980s–1990s (MEWMA, MCUSUM extensions)	1924–1931
Δημιουργός	Harold Hotelling (multivariate foundation); extended by Lowry, Woodall, and others	Walter A. Shewhart
Τύπος	Multivariate statistical process monitoring	Process monitoring and quality control method
Θεμελιώδης πηγή	Hotelling, H. (1947). Multivariate quality control illustrated by the air testing of sample bombsights. In C. Eisenhart, M. W. Hastay, & W. A. Wallis (Eds.), Techniques of Statistical Analysis (pp. 111–184). McGraw-Hill.	Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. ISBN: 978-0873890762
Εναλλακτικές ονομασίες	multivariate control chart, multi-response SPC, MRCC, multiple-response monitoring chart	SPC, statistical quality control, process control charting, Shewhart control
Συναφείς	6	6
Σύνοψη	A multi-response control chart simultaneously monitors two or more correlated quality characteristics on a single chart, preserving the correlation structure that univariate charts ignore. Built on Hotelling's T² statistic and its time-weighted extensions (MEWMA, MCUSUM), it detects process shifts that would be missed if each response were charted independently. It is the standard tool in manufacturing and service quality when product performance depends on multiple interrelated outputs.	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.