摘要
本文主要对配对数据的差异性研究和可信度分析,给出了对样本的分级模型,这在使用分组评分法的模型中有着重要的作用。根据2012年全国大学生数学建模竞赛题的数据,选择配对的Wilcoxon符号秩和检验检验了两组评酒员评价结果存在显著性差异,再运用变异系数法分析得出第二组评酒员的评分结果更可信,最后运用主成分分析和聚类分析对酿酒葡萄进行了分级。
The difference and the credibility of paired data are researched.The hierarchical model of the sample is established.It plays an important role in the grouping evaluation model.Then according to the data in the 2012 national college mathematical modeling contest,we choose the wilcoxon signed rank sum test to verify that the evaluation of two groups does have significant difference.Using the coefficient of variation,we conclude the second group is more reliable.Finally,we classify the wine grape through principal component analysis and cluster analysis.
出处
《生物技术世界》
2013年第4期43-44,46,共3页
Biotech World
