ENBIS: European Network for Business and Industrial Statistics
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ENBIS-8 in Athens
21 – 25 September 2008 Abstract submission: 14 March – 11 August 2008Design Schemes for the Xbar Control Chart
23 September 2008, 16:30 – 16:50Abstract
- Submitted by
- Marit Schoonhoven
- Authors
- Marit Schoonhoven Muhammed Riaz Ronald J.M.M. Does
- Affiliation
- IBIS UvA
- Abstract
- This paper studies several issues regarding the design of the Xbar control chart under normality. Different estimators of the standard deviation are considered and the effect of the estimator on the performance of the control chart is investigated. Furthermore, the choice of the factor used to get accurate control limits for moderate sample sizes, is addressed. The paper gives an overview on the performance of the charts by studying different characteristics of the run length distribution, both in the in-control and in the out-of-control situation.