A new method for detecting outliers in Data Envelopment Analysis

Nam Anh Tran, Gerald Shively () and Paul Preckel ()

Applied Economics Letters, 2010, vol. 17, issue 4, 313-316

Abstract: We introduce a simple method for detecting outliers in Data Envelopment Analysis. The method is based on two scalar measures. The first is the relative frequency with which an observation appears in the construction of the frontier when testing the efficiency of other observations, and the second is the cumulative weight of an observation in the construction of the frontier. We provide a link to computer programming code for implementing the procedure.

Date: 2010
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DOI: 10.1080/13504850701765119

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