Journal of the Korean Data and Information Science Society

The Korean Data and Information Science Society (한국데이터정보과학회)
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Reliability analysis of warranty returns data

품질보증 반환 데이터의 신뢰성 분석

  • Baik, Jaiwook (Department of Information Statistics, Korea National Open University) ;
  • Jo, Jinnam (Department of Statistics & Information, Dongduk Women's University)
  • 백재욱 (한국방송통신대학교 정보통계학과) ;
  • 조진남 (동덕여자대학교 정보통계학과)
  • Received : 2014.06.09
  • Accepted : 2014.07.19
  • Published : 2014.07.31
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Abstract

A certain number of products are sold each month and some of them are returned for repair. In this study both return rate and cumulative return rate are shown on the graph to show the general trend of how many products are returned as time goes by. Next this type of summary data can be considered as a conglomeration of both left and right censored data. So reliability analysis is attempted for this type of summary data. Lastly, left censored data can be traced to find the exact time period during which the product has been claimed. In that case the left censored data can be taken as failure data. So similar type of reliability analysis is attempted for the resulting right censored data.

기업에서는 매달 제품이 일정 수량만큼 판매되고, 이들 중 일부는 반환 또는 클레임이 제기된다. 본 연구에서는 이러한 품질보증 반환 데이터의 반환율을 그래프상에 어떻게 타점할 것인지 먼저 살펴본다. 이어서 이런 데이터는 좌측 및 우측 중도중단 데이터의 결합으로 생각할 수 있으므로 이런 데이터에 대해 와이블 분포 등을 적합시켜 신뢰성분석을 실시해본다. 마지막으로 좌측 중도중단 데이터의 경우 구체적인 반환시기를 알 수 있다면 좌측 중도중단 데이터는 고장 데이터가 되어, 이제는 우측 중도중단만 남게 되는데, 이때에도 와이블분포 등을 적합시켜 신뢰성분석을 실시해보고자 한다.

Keywords

References

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