Banker, Rajiv D.; Zheng, Zhiqiang; Natarajan, Ram - In: European Journal of Operational Research 206 (2010) 1, pp. 231-238
In this paper, we develop five statistical tests to compare the efficiencies of different groups of DMUs. We consider a data generating process (DGP) that models the deviation of the output from the best practice frontier as the sum of two components, a one-sided inefficiency term and a...