Using these annual reports of sample companies from 1999 to 2002, we have built a statistic model to examine the impact of diversification to the firm performance.
利用其公布的1999-2002年连续四年的年报，本文分别计算了衡量各公司多元化程度的赫芬达尔指数，并与一系列衡量企业经营绩效的指标建立回归模型。
Using these annual reports of sample companies from 1999 to 2002, we have built a statistic model to examine the impact of diversification to the firm performance.
利用其公布的1999-2002年连续四年的年报，本文分别计算了衡量各公司多元化程度的赫芬达尔指数，并与一系列衡量企业经营绩效的指标建立回归模型。
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