The Korean Journal of Applied Statistics (응용통계연구)

The Korean Statistical Society (한국통계학회)
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Comparison of control charts for individual observations

개별 관측치에 대한 관리도 비교

  • Lee, Sungim (Department of Statistics, Dankook University)
  • Received : 2021.10.13
  • Accepted : 2021.12.08
  • Published : 2022.04.30
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Abstract

In this paper, we consider the control charts applicable to monitoring the change of the population mean for sequentially observed individual data. The most representative control charts are Shewhart's individual control chart, the exponential weighted moving average (EWMA) control chart, and their combined control chart. We compare their performance based on a simulation study, and also, through real data analysis, we present how to apply control charts in practical application and investigate the problems of each control chart.

본 논문에서는 연속적으로 관측되는 개별 관측치에 대하여, 모평균의 변화를 모니터링하는 데 적용 가능한 관리도에 대하여 고찰해 보고자 한다. 가장 대표적인 관리도로 슈하르트의 X 관리도, 지수가중이동평균 관리도와 이들의 결합관리도에 관하여 살펴보고 모의실험을 통하여 각 관리도의 성능을 비교 평가해 보고자 한다. 또한, 실제 자료분석을 통해 실질적인 문제에서 관리도를 어떻게 사용해야 하는지 알아보고, 각 관리도의 문제점에 대하여 살펴보기로 한다.

Keywords

Acknowledgement

이 연구는 2020년도 단국대학교 대학연구비의 지원으로 연구되었음.

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