EWMA CHART BASED ON THE EFFECTIVE VARIANCE FOR MONITORING THE VARIABILITY OF MULTIVARIATE QUALITY CONTROL PROCESS CARTA EWMA CON VARIANZA EFECTIVA PARA MONITOREAR VARIABILIDAD EN PROCESOS DE CONTROL DE CALIDAD MULTIVARIADOS

EWMA CHART BASED ON THE EFFECTIVE VARIANCE FOR MONITORING THE VARIABILITY OF MULTIVARIATE QUALITY CONTROL PROCESS CARTA EWMA CON VARIANZA EFECTIVA PARA MONITOREAR VARIABILIDAD EN PROCESOS DE CONTROL DE CALIDAD MULTIVARIADOS

When it is of interest monitoring small changes in the variability (and/or the mean) of a process, the EWMA control charts have shown to be very efficient. These charts, usually use the generalized variance as a measure of global variability, defined as the determinant of the variance covariance mat...

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Bibliographic Details
Main Authors: Morales Víctor Hugo, Vargas José Alberto
Format: Article
Language:English
Published: Universidad Nacional de Colombia 2008-05-01
Series:Revista Colombiana de Estadística
Subjects:
Efective variance
EWMA charts
Generalized variance
Overall variability
Multivariate processes
Online Access:http://www.revistas.unal.edu.co/index.php/estad/article/view/29608

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