Now showing items 1-2 of 2
Nonparametric and Semiparametric Mixed Model Methods for Phase I Profile Monitoring
(Virginia Tech, 2010)
Profile monitoring is an approach in quality control best used where the process data follow a profile (or curve). The majority of previous studies in profile monitoring focused on the parametric modeling of either linear ...
On the Distribution of Hotelling's T² Statistic Based on the Successive Differences Covariance Matrix Estimator
(Virginia Tech, 2004-09-30)
In the historical (or retrospective or Phase I) multivariate data analysis, the choice of the estimator for the variance-covariance matrix is crucial to successfully detecting the presence of special causes of variation. ...