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Analysis of the Sampling in Quality Control Charts in non uniform Process by using a New Statistical Algorithm

Author Affiliations

  • 1Young Researchers Club, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, IRAN
  • 2 Iran Research Center for Creatology, Innovation and TRIZ, Isfahan,
  • 3 IRAN Department of Industrial Engineering, Najafabad Branch, Islamic Azad University, Isfahan, IRAN

Res. J. Recent Sci., Volume 1, Issue (8), Pages 36-41, August,2 (2012)


One of the errors in preparing control charts is sampling at the same interval time. Even though, the random sampling method is used, no attention is given to sampling time interval and therefore to find out whether the process is in control, the whole process (population) should be examined in all different time intervals. This leads to a considerable increase in quality control cost. In this paper, the attention is given by differentiating sampling time interval and the possibility of detecting trouble areas, therefore would increase. In this way, finding out trouble areas would be easier which leads to a decrease in quality control cost.


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