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신뢰성 시험 평가를 위한 통계적 시료수 결정에 대한 연구
김승현(Seung-Hyun Kim),염종섭(Jongseop Yeom),백일섭(Il-Seob Baek),김종선(Jong-Sun Kim),성시일(Si-Il Sung) 한국신뢰성학회 2020 신뢰성응용연구 Vol.20 No.1
Purpose: Determineing the sample size based on a statistical theory is regarded as a quantitative, effective, and rational method, but applying it in practice is difficult. Therefore, we treat a rule for determining the sample size by considering its practical applicability to real datasets. Methods: We examined sampling-based and parameter estimation-based statistical approaches. For the sampling-based approach, we dealt with the statistical theories and derivation processes and examined their interrelationships. For the parameter estimation-based approach, we treated the principle of sample size by considering the precision of the mean and interval estimation. Results: We treated the statistical theories and derivations of the various approaches and dealt with their interrelationships for methods to determine the sample size. Conclusion: From the various reliability test perspectives at the product development stage, the sampling-based approach can be applied to durability, environmental, and lifetime testing, while the parameter estimation-based approach can be used for the performance testing.
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