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Journal of Korean Society for Quality Management 1988;16(1): 23-. |
| 실험계획법의 전산화에 관한 연구(I) |
| 정수일 |
| 인하대학교 공과대학 산업공학과 |
| Studies on the Computerization of Design of Experiments(I) |
| Su-Il Jeong |
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| ABSTRACT |
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This paper studies the handling of significant digits and rounding off methods in domestic industries. ANOVA tables made by six well-known big companies are selected and analyzed. There exist various mistakes in handling of significant digits and rounding off methods such as: * too many significant digits in the Sum of Squares values in comparison to the original data * too many significant digits in the variance ratio in comparison to the F table values. * no consistancy in the number of significant digits * no consideration for the number of significant digits in computations * ignoring the KS A 0021 in rounding off methods etc. Such mistakes are caused from the characteristics of the personal computers rather than the misunderstandings about the significant digits conception. A subroutine is developed for PC in BASIC language to help the handling of significant digits and rounding off. |
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