成長效率之加總：指標法與指數法

Aggregation of Cost Efficiency: Indicators and Indexes Across Firms

在本文中，我們質疑：以比例形式衡量之Farrell的成本效率「指數」與以差額形式衡量之成本效率「指標」，是否能從廠商層次直接加總至產業層次。我們分析而得知答案是肯定的，但若要分別從技術效率或分配效率給予加總，則其結果並不一定是肯定的，特別是對「指數」法而言。因此就加總特性而言，我們認為「指標」法優於「指數」法。

In this paper we ask whether cost efficiency Farrell indexes (which are ratio measures) and cost efficiency indicators (which are difference measures) can be aggreagated from firm to industry. The answer is positve; however, if we wish to aggregate the technical and allocative efficiency components, the answer is not so simple, especially for the index measures. We conclude that the indicator approach is preferred to the index approach with respect to aggregation.