식스시그마 DMAIC 프로세스에서 모집단의 수와 데이터 종류에 따른 품질개선 기법의 오적용 유형 및 이해

Understanding and Misuse Type of Quality Improvement Tools According to the Kind of Data and the Number of Population in DMAIC Process of Six Sigma

The paper proposes the misuse types of statistical quality tools according to the kind of data and the number of population in DMAIC process of six sigma. The result presented in this paper can be extended to the QC story 15 steps of QC circle. The study also provides the improvement methods about control chart, measurement system analysis, statistical difference, and practical equivalence.