Türkiye'de faaliyet gösteren mevduat bankalarının teknik verimlilik analizi: Veri zarflama analizi ve tobit regresyon analizi

This thesis investigates efficiency of Turkish Banks for the period of 2003-2010 by employing non-parametric DEA. Tobit regression is used as a second step to determine drivers of estimated efficiency scores. VRS efficiency scores have been interpreted for three separate sub-periods: 2003-2005 sub-period as "Contraction and Recovery", 2005-2007 sub-period as "Growth and M&A", and finally 2008-2010 sub-period as "Global Financial Crises and Its Complications". State owned banks are found more efficient than other banks for the "Contraction and Recovery" sub-period. Foreign banks founded in Turkey is starting to become more efficient after this period and most efficient group in "Growth and M&A" sub-period. However, efficiency of these banks decreases drastically with the effect of current global crises which we call "Global Financial Crises and its Complications". As a second step, we used Tobit analysis to find out reasons behind efficiency scores. Capital adequacy ratio, income cost ratio, NPL ratio and branch ratio are significant for some period where liquidity, profitability and share in sector are not significant for none of periods. Keywords: DEA, Tobit Regression, Bank Efficiency, Global Crises, M&A