Performance of control charts for autoregressive conditional heteroscedastic processes
Authors:
- Yue FangYFYue Fang
- John ZhangJZJohn Zhang
- 2 August 1999
- journal article
- research article
- Published by Taylor & Francis in Journal of Applied Statistics
- Vol. 26 (6) , 701-714
Abstract
This paper examines the robustness of control schemes to data conditional heteroscedasticity. Overall, the results show that the control schemes which do not account for heteroscedasticity fail in providing reliable information on the status of the process. Consequently, incorrect conclusions will be drawn by applying these procedures in the presence of data conditional heteroscedasticity. Control charts with time-varying control limits are shown to be useful in that context.Keywords
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