Evaluation of the Efficiency Values of the Companies in Information Technology Sector With Data Envelopment Analysis

Efficiency value is one of the important tools which is used for measuring success levels of the companies. however,many input and output factors must be taken into consideration for measuring the efficiency level. data envelopment analysis (dea) is one of the techniques that provides to evaluate many different input and output factors together. in this study, the information has been given about data envelopment analysis, the mathematical process has been explained,the literature review has been made and the efficiency values of the twelve companies in bist information index have been determined with data envelopment analysis and the results have been evaluated respectively. the results show that some companies have got satisfactory profit levels with low investment and some companies have got low profit in spite of huge investment