本文采用非参数方法对中国上市公司财务比率在行业间的差异性和行业内的收敛性进行了检验。
This paper analyzes the difference between industries and convergence within industry of financial ratios for listed firms in China based on a non-parametric approach.
在研究测量误差分析、模型误差统计检验、变形分析、可靠性分析和优化设计等问题中，经常需要对统计量分布的非中心参数进行估计。
The noncentral parameter of statistic distribution often needs to be estimated in error analysis, statistical test, deformational analysis, reliability analysis, and optimum design, etc.
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