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| Statistic Analysis of Measurement Data from Cooperative Experiments on Method Precision |
| Received:July 27, 2013 Revised:September 06, 2013 |
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| DOI：doi:10.3969/j.issn.2095-1035.2014.01.019 |
| KeyWord:precision;accuracy;statistical method;repeatability limit;reproducibility limit;tolerance |
| Author | Institution |
| WEN Xiangdong |
武汉钢铁集团公司研究院，武汉 |
| SHAO Mei |
武汉钢铁集团公司研究院，武汉 |
| CAO Hongyan |
武汉钢铁集团公司研究院，武汉 |
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| Abstract: |
| The GB/T 6379.2-2004 statistical data analysis methodology was applied to analyze the data which were obtained from the cooperative experiments on the precision of the molybdenum blue photometric method that was employed to determine the silicon dioxide in limestone and dolomite. Based on the statistical analysis, a functional expression of the relationship between reproducibility limit r , reproducibility limit R and content (level) m has been obtained. The issues such as data treatment procedure, the determination of the graphic expression for the regression equation and the expression of method precision, etc., have also been discussed in the paper. It was found that it is more practical to use the content to sectionally represent repeatability limit and reproducibility limit. In addition, several problems that need to care about during conducting cooperation assay and handling data have also been deeply discussed. |
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