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Journal of Quality and Reliability Engineering
Volume 2013 (2013), Article ID 808741, 5 pages
Research Article

A Procedure for the Selection of Single Sampling Plans by Variables Based on Pareto Distribution

1Department of Statistics, PSG College of Arts and Science, Coimbatore, Tamil Nadu 641 014, India
2Department of Statistics, Bharathiar University, Coimbatore, Tamil Nadu 641 046, India

Received 16 December 2012; Revised 13 August 2013; Accepted 20 August 2013

Academic Editor: Yi-Hung Chen

Copyright © 2013 Geetha Sathya Narayanan and Vijayaraghavan Rajarathinam. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Product control in statistical quality control is the methodology that deals with procedures for taking decisions about one or more lots of finished products manufactured by production processes. Sampling inspection by variables is one of the major classifications of product control and comprises procedures for deciding about the disposition of a lot of individual units based on sample measurements of units on a quality characteristic under study. These procedures are defined under the assumption that the quality characteristic is measurable on a continuous scale, and the functional form of the probability distribution must be known. Inspection procedures which have been developed under the implicit assumption that the quality characteristic is distributed as normal with the related properties are found in the literature of product control. The assumption of normality may not be realized often in practice, and it becomes indispensable to investigate the properties of sampling plans based on nonnormal distributions. In this paper, a single sampling plan by variables is formulated and evaluated when the quality characteristic is assumed to be distributed according to a Pareto distribution. A procedure is developed for determining the parameters of the plan for specified requirements to ensure protection to both the producer and consumer.