Simpson, Gary (2007). A cautionary note on methods of comparing programmatic efficiency between two or more groups of DMUs in data envelopment analysis. Journal of Productivity Analysis, 28 (1-2), pp. 141-147.
Abstract
In some applications of data envelopment analysis (DEA) there may be doubt as to whether all the DMUs form a single group with a common efficiency distribution. The Mann-Whitney rank statistic has been used to evaluate if two groups of DMUs come from a common efficiency distribution under the assumption of them sharing a common frontier and to test if the two groups have a common frontier. These procedures have subsequently been extended using the Kruskal-Wallis rank statistic to consider more than two groups. This technical note identifies problems with the second of these applications of both the Mann-Whitney and Kruskal-Wallis rank statistics. It also considers possible alternative methods of testing if groups have a common frontier, and the difficulties of disaggregating managerial and programmatic efficiency within a non-parametric framework. © 2007 Springer Science+Business Media, LLC.
Divisions: | College of Business and Social Sciences > Aston Business School > Operations & Information Management College of Business and Social Sciences > Aston Business School |
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Additional Information: | The original publication is available at springerlink.com |
Publication ISSN: | 1573-0441 |
Last Modified: | 29 Nov 2023 10:12 |
Date Deposited: | 03 Nov 2009 09:56 |
Full Text Link: |
http://www.spri ... 306w6105085637/ 10.1007/s11123-007-0041-y |
Related URLs: |
http://www.scop ... tnerID=8YFLogxK
(Scopus URL) |
PURE Output Type: | Article |
Published Date: | 2007-10 |
Authors: |
Simpson, Gary
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