The Korean Journal of Applied Statistics (응용통계연구)

The Korean Statistical Society (한국통계학회)
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Understanding Complex Design Features via Design Effect Models

설계효과모형을 통한 설계요소의 유용성 이해

  • Park, Inho (Department of Statistics, Pukyong National University)
  • Received : 2015.10.29
  • Accepted : 2015.11.13
  • Published : 2015.12.31
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Abstract

Survey research, data is commonly collected through a sample design with complex design features that allow the relative efficiency on the precision of an estimator to be measured using the concept of the design effect compared to simple random sampling as a reference design. This concept is most useful when the design effect can be expressed as a function of various design features. We propose a design effect formula suitable under a stratified multistage sampling by generalizing Gabler et al. (1999, 2006)'s approaches for multistage sampling. Its use can either guide improvement in the design efficiency when in design stage or enable the evaluation of the adopted design features afterwards.

조사자료분석에 있어서 표본추정량에 대해 설계요소가 갖는 효율성은 단순확률추출과 비교한 복잡표본설계의 의한 표본추출이 주는 분산의 상대적 크기인 설계효과를 통해 평가할 수 있다. 설계효과의 유용성은 복잡설계요소의 함수형태로 표현될 수 있을때 극대화될 수 있다. 본 연구에서는 층화다단추출의 표본설계에서 적용될 수 있는 설계효과모형을 제시하였다. 제시된 설계효과모형은 기존 다단추출을 위한 Gabler 등 (1999, 2006)의 모형을 일반화한 것으로 층구조, 표본할당, 집락추출 및 불균등가중치 등의 설계요소들이 정도수준에 갖는 영향력을 함수식으로 명확히 나타내주고 있다. 이를 활용하면 사전에 기술된 추정정도를 얻기 위해 설정한 표본크기가 줄 수 있는 설계효과를 예측하는데 활용할 수 있다. 또한 사후적으로 표본설계의 개별 설계요소들이 표본추정량에 대해 갖는 효율성을 평가하는데 활용될 수 있다.

Keywords

References

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