Scandinavian Working Papers in Economics
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Department of Business and Management Science, Norwegian School of Economics (NHH) Discussion Papers, Department of Business and Management Science, Norwegian School of Economics (NHH)

No 2015/25:
Malmquist Productivity Analysis based on StoNED

Xiaomei Cheng (), Endre Bjørndal () and Mette Bjørndal ()

Abstract: We construct a Malmquist productivity index based on stochastic non-parametric envelopment of data (StoNED) method, and we study how the distributional assumptions in the second StoNED stage affect productivity change and its decompositions. Our discussion show that the distributional assumptions do not affect the estimates of overall productivity change and scale efficiency change, but that estimates of efficiency change and technical change are affected. Data on Norwegian electricity distribution companies is used to illustrate our discussion.

Keywords: Productivity and competitiveness; StoNED; Malmquist productivity index; Wrong skewness issue; (follow links to similar papers)

JEL-Codes: C00; C10; C14; Q00; (follow links to similar papers)

16 pages, September 24, 2015

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