【摘要】 对天津市工业中十六个主要行业 1 997年的数据进行了主成分分析、聚类分析和因子分析 .提出用第一主成分作为行业规模的度量 ,第二主成分作为行业效益的度量 .进而从主成分分析和因子分析得出了各项经济指标反映行业经济效益、行业规模的情况和两个公共因子的含义 ,还从聚类分析中得出了各行业发展层次的分布情况更多还原

【Abstract】 In this paper, the data of 16 vocations in the industry of Tianjin are dealt with by principal component analysis, cluster analysis and factor analysis. As a result, the first principal component is regarded as the measure of the scale vocation, and also the second principal component is considered as the measure of efficiency. Additionally, the order of them is presented in the paper. The economic efficiency, the scale of vocation and the connotation of common factor implied by the variables are obtained by principal analysis and factor analysis. The hierarchy of the vocation development is acquired by cluster analysis.更多还原