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Gini's Mean Difference Based Time-Varying EWMA Charts
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Muhammad Riaz
Published/Copyright:
March 15, 2010
Abstract
The concept of time-varying control limits with reference to EWMA charts is briefly introduced and for the asymptotic control charts proposed by Riaz and Abbasi [Interstat : 3, 2007], a proposal of time-varying control limits is made. The proposed limits are subsequently compared with those of Riaz and Abbasi [Interstat : 3, 2007] asymptotic charts and different time-varying EWMA control structures based on the sample range R, the sample standard deviation S and Downton's estimator σ*. The probability of detection of outliers is used as comparison criterion.
Key Words:: Control charts; Downton's estimator; EWMA control structures; location and scale parameters; normality; outliers
Published Online: 2010-03-15
Published in Print: 2009-October
© Heldermann Verlag
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Keywords for this article
Control charts;
Downton's estimator;
EWMA control structures;
location and scale parameters;
normality;
outliers
Articles in the same Issue
- Uncertainty and E-Learning
- Selection of Bayesian Single Sampling Attributes Plans Based on Polya Distribution
- Controlling Energy Utilisation at Reheat Furnace Using Time Series Model
- A Replacement Policy Based on Down Time for a Cold Standby System with Dependent Lifetime and Repairtime
- Inference on a Sharp Jump in Hazard Rate: A Review
- Multivariate EWMA Charts with Variable Sampling Intervals
- Quartile Double Rankled Set Sampling for Estimating the Population Mean
- Control Charts for Mean under Shrinkage Technique
- A Note on Maximum Entropy in Queueing Problems
- Gini's Mean Difference Based Time-Varying EWMA Charts
- A Note on the XIX IMEKO World Congress Fundamental and Applied Metrology
