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5. A New Adaptive Variable Sample Size Approach in EWMA Control Chart.

Author

Amiri, Amirhossein, Nedaie, Ali, and Alikhani, Mahdi

Subjects
*SAMPLE size (Statistics), *INSTRUMENTAL variables (Statistics), *QUALITY control charts, *LINEAR systems, *PERFORMANCE evaluation, *INTEGERS, *MATHEMATICAL functions
Abstract

Adaptive control charts have been developed for improving the capability of control charts in detecting small shifts. In this article, we propose a new exponential weighted moving average control chart with variable sample size, in which the sample size is determined as an integer linear function by EWMA statistic value. The performance of the proposed VSS EWMA control chart is compared with FSS EWMA as well as traditional VSS EWMA control charts. The results show the better performance of the proposed VSS strategy respect to the traditional one and fixed sample size. [ABSTRACT FROM PUBLISHER]

Published
2014
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