88
Views
13
CrossRef citations to date
0
Altmetric
Original Articles

Technical efficiency bias in data envelopment analysis caused by intra-output aggregation

&
Pages 623-626 | Published online: 11 Jul 2007
 

Abstract

We show that an organization's technical efficiency scores are biased downward by linear aggregation of the quantities of the same type of output that are produced by multiple subunits (intra-output aggregation). We expand the models of Färe et al. (Citation2002, Citation2004) and Barnum and Gleason (Citation2005) to account for intra-output aggregation bias, yielding an expanded model in which technical efficiency is unbiased by any type of input or output aggregation. We illustrate intra-output aggregation bias with data envelopment analysis results from Canadian paratransit operations.

Acknowledgement

We thank Brendon Hemily, PhD, transit consultant and former Manager of Research and Technical Services for the Canadian Urban Transit Association, for significant assistance and insights into paratransit operations and accounting. Any misinterpretations of his counsel are our responsibility.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 53.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 205.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.