Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Analysis of BOD Mean Concentration and Confidence Interval using Bootstrap Technique

Bootstrap 기법을 이용한 BOD 평균 농도 및 신뢰구간 분석

  • Kim, Kyung Sub (Department of Environmental Engineering, Hankyong National University)
  • 김경섭 (국립한경대학교 환경공학과)
  • Received : 2009.10.21
  • Accepted : 2010.01.14
  • Published : 2010.03.30
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Abstract

It is very important to know mean and confidence interval of water-quality constituents such as BOD for water-quality control and management of rivers and reservoirs effectively. The mean and confidence interval of BOD at Anseong2 and Hwangguji3 sampling stations which are located at the border of local governments in Anseong Stream were estimated and analyzed in this paper using Bootstrap technique which is one of non-parametric statistics. The results of Bootstrap were compared with arithmetic mean, geometric mean, Biweight method mean as a point estimator and distribution mean came from the appropriate probability distribution of Log-normal. In Bootstrap technique 12 data set was randomly selected in each year and 1000 samples was produced to get parameter of population. Visual Basic for Applications (VBA) of Microsoft Excel was utilized in Bootstrap. It was revealed that the Bootstrap technique can be used to explain more rigorously and robustly the achievement or violation of BOD target concentration in Total Maximum Daily Load (TMDL).

Keywords

References

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