Cihan University-Erbil Scientific Journal a periodic multidisciplinary scientific journal issued by Cihan University- Erbil after auditing and revising by a specialized staff headed by the President of the university. The journal publishes original creative researches related to all fields of pure and applied sciences and humanities in Kurdish, Arabic and English.
Related Articles
Author:Dalal S. Al-jawad
Accounting Department, Cihan University-Erbil
DOI: http://dx.doi.org/10.24086/cuesj.v1n1a4
Abstract
In this paper the application of skip-lot sampling based in part on process control charts using specially designed warning limits when the quality of the submitted product is believed to be generally good is presented. When the producer can prove to the consumer that he has improved the quality of his product to level better than the specified Acceptable Quality Level (AQL), the consumer can use the skip-lot procedure. The consumer may save cost by applying the Skip-lot sampling plan. For independent characteristics related to the same product the decision to resume checking is suggested based on one point or r chart points outside the control limits. For dependent characteristics the resume checking signal is governed by the use of the test statistic based on Hotelling T2.
Keywords: Skip-lot procedure; Acceptable Quality Level (AQL; Hotelling T2; Acceptance number.
References
Al-jawad, D.S. (1987) Some aspects of quality assurance, with particular reference to quality auditing. PhD thesis – Essex University, United Kingdom.
BS 6001, (1985) Sampling procedures for inspection by attributes, Part 3, Skip- lot procedures.
Dodge, H.F. (1955) Skip lot sampling plan. Industrial quality control, 11(5), pp3-5.
Dodge, H.F. and Perry R.L. (1971) A system of skip-lot plans for lot by lot inspection. In: American Soc. for quality control tech. conf. Transactions, pp 469-477.
Jackson, J.E. (1959) Quality control methods for several related variable. Technometrics, 1(4), pp 359-377.
Muhammad A., Saminathan B., Chi-Hyuck J. and Munir A. (2010) Optimal designing of skip-lot sampling plan by two point method. Pak. J. Statist., 26(4), pp. 585-592.
Perry, R.L. (1973a) Skip-lot sampling plans. Journal of Quality Technology, 5(3), pp 123-130.
Perry, R.L. (1973b) Tow level skip-lot sampling plans operating characteristics properties. Journal of Quality Technology, 5(4), pp 160-166.
Schilling, E.G. and Sheesley J.H. (1978) The performance of MIL-STD-105D under the switching rules, Part 2, Tables. Journal of Quality Technology, 10(3), pp 104-124.
Full Text
