本文以2006年5月至2009年7月，選定個案銀行兼營證券商11個營業據點為研究對象，首先利用資料包絡分析法，針對11個DMU進行經營效率分析，並藉由差額變數分析，提出改善經營效率之建議。 第二階段再以Tobit 迴歸分析，探討本文所選取之三項外生變數與個案銀行兼營證券商經營效率值之相關程度。 DEA結果顯示：11個受評單位39個月之平均整體效率值為77.24％，即有22.76％的資源浪費，故個案銀行兼營證券商投入資源運用上之改善空間仍相當大。其次在Tobit迴歸分析實證結果（一）個案銀行兼營證券商改制後其經營績效並未如預期的冀望來提升。（二）金融危機事件對個案銀行兼營證券商改制無顯著影響。（三）時間趨勢項對個案銀行兼營證券商改制為專業經理人制度，在總技術效率（TE）及純技術效率（PTE）呈現顯著正相關，而與規模效率（SE）則無顯著關係。 This thesis is about the analysis of operating efficiency based on DEA approach. First, the data set included 11 business units of T concurrently-operating-securities bank during the period from May, 2006 to Jul, 2009. Using slacks variable analysis, suggestions were made to the bank for improving managing efficiency. In the second stage, tobit regression analysis is used to test the relations between the three exogenous variables and the operating efficiency of T concurrently-operating-securities bank. As the results of DEA shows, the whole efficiency ratio of the 11 Decision Making Units (DMU) value is 77.24%, that is, there is 22.76% improper investment that makes no profit. It could have a great deal of improvement for the T concurrently-operating-securities bank on investing and operating resource. Besides, the Tobit regression analysis shows that the reformed professional manager policy did not increase the business performance of T concurrently-operating-securities bank as expected before. Second, the events of financial crisis did not have significant effect on the reformed professional manager policy. The last, as an explanatory variable, the time trend item to the reformed professional manager policy on business performance of T concurrently-operating-securities bank, it was significant positive correlated with technical efficiency(TE) and with pure technical efficiency(PTE), but it was not significant positive correlated with the efficiency of scale(SE).
