We demonstrate a methodology for estimating, with a specified probability, the interval within which the true DEA efficiency of an individual Decision Making Unit occurs. With this procedure, decisions based on DEA scores are made under conditions of risk, as opposed to the current practice in...

The study shows that technical efficiency scores in Data Envelopment Analysis are biased by linear aggregation of the quantities of the same type of input that are used by all outputs (intra-input aggregation). Fare et al. 's (2004) models are expanded to account for this additional bias, and...

Building on Data Envelopment Analysis technical efficiency models developed by Fare et al. (2004) and Barnum and Gleason (2005), a procedure is illustrated for estimating a firm's efficiency in allocating inputs among the production technologies producing its outputs.