In the article, the author presents Data Envelopment Analysis, which is a method for measuring relative technical efficiency. The idea of DEA method is illustrated by a simple example, where objects characterized by one input and one output only are considered. Next, a the basic DEA model (CCR...

Classic interpretation of the isoquant is well-known, e.g., the output isoquant informs us about the quantities of inputs that are needed to produce a given amount of output, assuming that the production technology is given. The article is an attempt to formulate an alternative interpretation of...