A New Robust Multivariate EWMA Dispersion Control Chart for Individual Observations

by Jimoh Olawale Ajadi, Inez Maria Zwetsloot, Kwok-Leung Tsui
Published 2021-05-01

Multivariate Mixed EWMA-CUSUM Control Chart for Monitoring the Process Variance-Covariance Matrix

by Muhammad Riaz, Jimoh Olawale Ajadi, Tahir Mahmood, Saddam Akber Abbasi
Published 2019-01-01