- 개별 관측치에서 지수변환을 이용한 EWMA 관리도 적용기법
- EWMA chart Application using the Transformation of the Exponential with Individual Observations
- ㆍ 저자명
- 지선수
- ㆍ 간행물명
- 공업경영학회지
- ㆍ 권/호정보
- 1999년|22권 52호|pp.337-345 (9 pages)
- ㆍ 발행정보
- 한국산업경영시스템학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
The long-tailed, positively skewed exponential distribution can be made into an almost symmetric distribution by taking the exponent of the data. In these situations, to use the traditional shewhart control limits on an individuals chart would be impractical and inconvenient. The transformed data, approximately bell-shaped, can be plotted conveniently on the individuals chart and exponentially weighted moving average chart. In this paper, using modifying statistics with transformed exponential of the data, we give a method for constructing control charts. Selecting method of exponent for individual chart is evaluated. And consider that smaller weight being assigned to the older data as time process and properties and taking method of exponent($ heta$), weighting factor($alpha$) are suggested. Our recommendation, on the basis result of simulation, is practical method for EWMA chart.