A new control charting technique to monitor the variability of any distribution is proposed. The simulation study shows that the new method outperforms all the existing methods in controlling the Type I error rates and it also has good power performance for all distributions considered in the study.
Borysov, P. and Sa, Ping
"A Robust One-Sided Variability Control Chart,"
Journal of Modern Applied Statistical Methods: Vol. 10
, Article 34.
Available at: http://digitalcommons.wayne.edu/jmasm/vol10/iss1/34