Proceedings of the Safety Management and Science Conference (대한안전경영과학회:학술대회논문집)
- 2012.04a
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- Pages.579-583
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- 2012
Assessment of Properties of Error Terms in Design of Experiment
실험계획법에서 오차항의 가정 검토방안
Abstract
The Design of Experiment (DOE) is a most practical technique when establishing an optimal condition for production technology in Six Sigma innovation project. This research proposes the assessment of properties of error terms, such as normality, equal variance, unbiasedness and independence. The properties of six nonparametric ranking techniques for checking normality assumption are discussed as well as run test which is used to identify the randomness, and to check unbiased assumption. Furthermore, Durbin-Watson (DW) statistics and ARIMA (p,d,q) process are discussed to identify the serial correlation.
Keywords
- DOE;
- Error;
- Normality;
- Equal Variance;
- Unbiasedness;
- Independence;
- Nonparametric Ranking;
- Run Test;
- DW Statistics;
- ARIMA (p,d,q)