根据《American Heritage Stedman ' s Medical Dictionary》的定义，分类是“划分有序系统中组织的类别，以指示自然关系。”
According to the American Heritage Stedman's Medical dictionary, taxonomy is "the classification of organisms in an ordered system that indicates natural relationships." 1.
以几篇临床论文实例讨论分类断据的统计方法。对有序分类数据注意选择和检验。
The statistical methods for categorical data have been discussed with examples in clinical papers. we ought to pay attention to selecting rank sum test for data of ordinal categories.
依据大量的调查资料，应用有序样本聚类方法，按林分类型、立地条件和林龄来确定次生林改造生长量划分标准；
Based on a large amount of investigating data, the authors use cluster analysis method with ordered samples to set dividing standards for the growth rate of secondary forests rechange.
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