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政大機構典藏 > 商學院 > 統計學系 > 期刊論文 > Item 140.119/63779

Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/63779

Title:	Using a Single Average Loss Control Chart to Monitor Process Mean and Variability.
Authors:	楊素芬 Yang, Su-Fen
Contributors:	統計系
Keywords:	Adjusted average time to signal;Average loss;Control chart;Markov chain;Variable sampling intervals
Date:	2013.10
Issue Date:	2014-02-11 14:01:20 (UTC+8)
Abstract:	A single chart, instead of X-bar and R charts or X-bar and S charts, to monitor simultaneously the process mean and the variability if found would cut down the time and effort. Some researches have been done in finding such charts. In reality, process target is more important than process mean. A much easier average loss chart is first proposed here to detect the increases in the difference of the process mean and the target and the variability simultaneously. An example of the customer complaint processing time of the customer service center of an IT company shows the application and the performance of the proposed average loss control chart. Furthermore, a more efficient optimal average loss chart with variable sampling intervals is proposed and performs better than the average loss chart with fixed sampling intervals and the Shewhart joint X-bar and S charts. Some numerical analyses demonstrated the findings. [ABSTRACT FROM AUTHOR]
Relation:	Communications in Statistics-Simulation and Computation, 42(7), 1549-15
Data Type:	article
DOI 連結:	http://dx.doi.org/10.1080/03610918.2012.667478
DOI:	10.1080/03610918.2012.667478
Appears in Collections:	[統計學系] 期刊論文

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