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Relative Efficiency of Commercial Banks in Nigeria: A Nonparametric Mathematical Optimization Analysis

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  • Michael O. Nyong

    (Department of Economics, University of Calabar, Nigeria)

Abstract

This paper investigates the relative efficiency of a cross section of Nigerian domestic commercial banks before and after recapitalization and consolidation in 2005. The method of analysis is the non-parametric mathematical optimization approach rooted in data envelopment analysis (DEA). Two-stage approach is adopted. In the first stage DEA is used to determine the degree of efficiency of the 66 banks (2001, 2002) and 22 banks (2008, 2009). In the second stage Tobit regression model is used to econometrically estimate the parameters of the model to examine the sources of bank inefficiency.  The results revealed high level of inefficiency among the banks and hence of significant waste in utilization of resources. Inefficiency range from 36% in 2001 to 45% in 2002 and from 34% in 2009 to 35% in 2008.  The inefficiency of the banks is due more to pure technical rather than scale effect. Thus, Nigerian commercial banks should worry less about not choosing the optimal scale for production though the study found economies of scale that have not been exhausted. The sources of inefficiency were identified to be low capital-asset ratio, high operating expense-income ratio, low returns on equity, market share, interest expense-deposit ratio,  and low liquidity  ratio. The results have strong policy implications for banks themselves, the deposit insurance corporation and central bank to minimize distress and avert bank failure.

Suggested Citation

  • Michael O. Nyong, 2017. "Relative Efficiency of Commercial Banks in Nigeria: A Nonparametric Mathematical Optimization Analysis," Noble International Journal of Economics and Financial Research, Noble Academic Publsiher, vol. 2(2), pages 27-49, February.
  • Handle: RePEc:nap:nijefr:2017:p:27-49
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    References listed on IDEAS

    as
    1. Maudos, Joaquin & Pastor, Jose M. & Perez, Francisco & Quesada, Javier, 2002. "Cost and profit efficiency in European banks," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 12(1), pages 33-58, February.
    2. Berger, Allen N. & Humphrey, David B., 1991. "The dominance of inefficiencies over scale and product mix economies in banking," Journal of Monetary Economics, Elsevier, vol. 28(1), pages 117-148, August.
    3. Greene, William H., 1980. "Maximum likelihood estimation of econometric frontier functions," Journal of Econometrics, Elsevier, vol. 13(1), pages 27-56, May.
    4. Fare, Rolf & Grosskopf, Shawna & Lovell, C A Knox, 1983. " The Structure of Technical Efficiency," Scandinavian Journal of Economics, Wiley Blackwell, vol. 85(2), pages 181-190.
    5. Ferrier, Gary D. & Lovell, C. A. Knox, 1990. "Measuring cost efficiency in banking : Econometric and linear programming evidence," Journal of Econometrics, Elsevier, vol. 46(1-2), pages 229-245.
    6. H. Semih Yildirim & George Philippatos, 2007. "Efficiency of Banks: Recent Evidence from the Transition Economies of Europe, 1993-2000," The European Journal of Finance, Taylor & Francis Journals, vol. 13(2), pages 123-143.
    7. Ilko Naaborg & Bert Scholtens & Jakob de Haan & Hanneke Bol & Ralph de Haas, 2004. "How Important are Foreign Banks in the Financial Development of European Transition Countries?," Journal of Emerging Market Finance, Institute for Financial Management and Research, vol. 3(2), pages 99-123, August.
    8. Barbara Casu & Philip Molyneux, 2003. "A comparative study of efficiency in European banking," Applied Economics, Taylor & Francis Journals, vol. 35(17), pages 1865-1876.
    9. Avkiran, Necmi Kemal, 1999. "The evidence on efficiency gains: The role of mergers and the benefits to the public," Journal of Banking & Finance, Elsevier, vol. 23(7), pages 991-1013, July.
    10. Berger, Allen N. & Humphrey, David B., 1997. "Efficiency of financial institutions: International survey and directions for future research," European Journal of Operational Research, Elsevier, vol. 98(2), pages 175-212, April.
    11. Charnes, A. & Cooper, W. W. & Rhodes, E., 1978. "Measuring the efficiency of decision making units," European Journal of Operational Research, Elsevier, vol. 2(6), pages 429-444, November.
    12. Onour, Ibrahim & Abdalla, Abdelgadir, 2011. "Technical efficiency analysis of banks in major oil exporting Middle East countries," MPRA Paper 29884, University Library of Munich, Germany.
    13. Berger, Allen N. & Hunter, William C. & Timme, Stephen G., 1993. "The efficiency of financial institutions: A review and preview of research past, present and future," Journal of Banking & Finance, Elsevier, vol. 17(2-3), pages 221-249, April.
    14. Donsyah Yudistira, 2004. "Efficiency of Islamic Banks: an Empirical Analysis of 18 Banks," Finance 0406007, University Library of Munich, Germany.
    15. Joaquin Maudos & Jose Pastor, 2001. "Cost and profit efficiency in banking: an international comparison of Europe, Japan and the USA," Applied Economics Letters, Taylor & Francis Journals, vol. 8(6), pages 383-387.
    16. Stevenson, Rodney E., 1980. "Likelihood functions for generalized stochastic frontier estimation," Journal of Econometrics, Elsevier, vol. 13(1), pages 57-66, May.
    17. Ramakrishnan Ramanathan, 2007. "Performance of banks in countries of the Gulf Cooperation Council," International Journal of Productivity and Performance Management, Emerald Group Publishing, vol. 56(2), pages 137-154, January.
    18. Sathye, Milind, 2003. "Efficiency of banks in a developing economy: The case of India," European Journal of Operational Research, Elsevier, vol. 148(3), pages 662-671, August.
    19. Seiford, Lawrence M. & Thrall, Robert M., 1990. "Recent developments in DEA : The mathematical programming approach to frontier analysis," Journal of Econometrics, Elsevier, vol. 46(1-2), pages 7-38.
    20. Altunbas, Yener & Liu, Ming-Hau & Molyneux, Philip & Seth, Rama, 2000. "Efficiency and risk in Japanese banking," Journal of Banking & Finance, Elsevier, vol. 24(10), pages 1605-1628, October.
    21. George J. Benston, 1965. "Branch Banking And Economies Of Scale," Journal of Finance, American Finance Association, vol. 20(2), pages 312-331, May.
    22. R. D. Banker & A. Charnes & W. W. Cooper, 1984. "Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis," Management Science, INFORMS, vol. 30(9), pages 1078-1092, September.
    23. Stigler, George J, 1976. "The Xistence of X-Efficiency," American Economic Review, American Economic Association, vol. 66(1), pages 213-216, March.
    24. Osman Zaim, 1995. "The Effect of Financial Liberalizationon the Efficiency of Turkish Commercial Banks," Working Papers 9505, Department of Economics, Bilkent University.
    25. Agha Iqbal Ali & Wade D. Cook & Lawrence M. Seiford, 1991. "Strict vs. Weak Ordinal Relations for Multipliers in Data Envelopment Analysis," Management Science, INFORMS, vol. 37(6), pages 733-738, June.
    26. Seiford, Lawrence M. & Zhu, Joe, 1999. "An investigation of returns to scale in data envelopment analysis," Omega, Elsevier, vol. 27(1), pages 1-11, February.
    27. Sealey, Calvin W, Jr & Lindley, James T, 1977. "Inputs, Outputs, and a Theory of Production and Cost at Depository Financial Institutions," Journal of Finance, American Finance Association, vol. 32(4), pages 1251-1266, September.
    28. Frances N. Obafemi, 2012. "The Technical Efficiency of Nigerian Banks," Asian Economic and Financial Review, Asian Economic and Social Society, vol. 2(2), pages 407-420, June.
    29. Sylvanus I. Ikhide, 2008. "Measuring The Operational Efficiency Of Commercial Banks In Namibia," South African Journal of Economics, Economic Society of South Africa, vol. 76(4), pages 586-595, December.
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