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題名 A new chart for monitoring service process with unknown distribution
作者 Yang, Su-Fen;Hung, Ying-Chao;Cheng, Tsung-Chi;Tsai, Wen-Chi;Cheng, Smiley W. H.
楊素芬
貢獻者 統計系
日期 2011
上傳時間 7-四月-2015 17:02:27 (UTC+8)
摘要 Control charts are effective tools in monitoring both the manufacturing processes and the service processes. Many service processes data came from a process with non-normal distribution or unknown distribution the commonly used Shewhart variables control charts which depend heavily on the normality assumption should not be applied here. Hence an alternative is desired to handle these type of process data. In this paper, we propose a new Mean Chart based on a simple statistic to monitor the process mean shifts. The sampling properties of the new monitoring statistic are explored and the average run lengths of the proposed new chart are calculated. A numerical example of service times from a bank service system with skewed distribution is used to illustrate the proposed Mean Chart. A comparison with two existing charts is also performed. The Mean Chart showed better detection ability than those two charts in detecting the shifts of the process mean.
關聯 International Conference on Services Systems and Services Management - ICSSSM , pp. 1-5
資料類型 conference
DOI http://dx.doi.org/10.1109/ICSSSM.2011.5959312
dc.contributor 統計系
dc.creator (作者) Yang, Su-Fen;Hung, Ying-Chao;Cheng, Tsung-Chi;Tsai, Wen-Chi;Cheng, Smiley W. H.
dc.creator (作者) 楊素芬zh_TW
dc.date (日期) 2011
dc.date.accessioned 7-四月-2015 17:02:27 (UTC+8)-
dc.date.available 7-四月-2015 17:02:27 (UTC+8)-
dc.date.issued (上傳時間) 7-四月-2015 17:02:27 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/74373-
dc.description.abstract (摘要) Control charts are effective tools in monitoring both the manufacturing processes and the service processes. Many service processes data came from a process with non-normal distribution or unknown distribution the commonly used Shewhart variables control charts which depend heavily on the normality assumption should not be applied here. Hence an alternative is desired to handle these type of process data. In this paper, we propose a new Mean Chart based on a simple statistic to monitor the process mean shifts. The sampling properties of the new monitoring statistic are explored and the average run lengths of the proposed new chart are calculated. A numerical example of service times from a bank service system with skewed distribution is used to illustrate the proposed Mean Chart. A comparison with two existing charts is also performed. The Mean Chart showed better detection ability than those two charts in detecting the shifts of the process mean.
dc.format.extent 130 bytes-
dc.format.mimetype text/html-
dc.relation (關聯) International Conference on Services Systems and Services Management - ICSSSM , pp. 1-5
dc.title (題名) A new chart for monitoring service process with unknown distribution
dc.type (資料類型) conferenceen
dc.identifier.doi (DOI) 10.1109/ICSSSM.2011.5959312en_US
dc.doi.uri (DOI) http://dx.doi.org/10.1109/ICSSSM.2011.5959312en_US