【摘要】 利用主成分分析运用SPSS软件对汶川地震36个严重受灾县市进行了综合分析.一方面,得到了用来判断灾情严重程度的主要灾情指标,另一方面,依据主成分的综合得分对36个县市按照灾情严重程度进行了排序.同时,依据主成分综合得分的均值化数值对36个县市进行了分类.更多还原

【Abstract】 By principal component analysis of SPSS software,the synthetic evaluation is conducted on 36 serious disaster-stricken counties and cities in Wenchuan earthquake.Firstly,the main indicators of disaster are gained to determine severity of the disaster.Secondly,these 36 counties and cities are ranked according to the severity of disaster based on comprehensive scores of principal components.Thirdly,these 36 counties and cities are classified according to the centering value from comprehensive scores of main composition.更多还原