文章基本信息

标题：Using Geostatistics to Estimate the Variability of Autocorrelated Processes
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作者：Sueli Aparecida Mingoti ; Otaviano Francisco Neves
期刊名称：Brazilian Journal of Operations & Production Management
印刷版ISSN：1679-8171
出版年度：2010
卷号：2
期号：1
页码：39-56
语种：English
出版社：Associação Brasileira de Engenharia de Produção (ABEPRO)
摘要：Statistical quality control is used to detect changes in the parameters values of the process which usually are estimated under the assumption of independence of the sampling units with respect to the quality characteristic. However, this is questionable for many processes. The main objective of this paper is to present estimators for the variance of autocorrelated processes by using Geostatistics methodology. With this new procedure the usual Shewhart’s control charts still can be used to monitor the quality of the process. A Monte Carlo simulation study showed that the proposed estimators have good performance.