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Variance-Ratio Tests: Small-Sample Properties with an Application to International Output Data

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Author Info

  • Cecchetti, Stephen G
  • Lam, Pok-sang

Abstract

Two aspects of statistical inference using variance-ratio statistics are studied, (1) the accuracy of asymptotic approximations in small samples and (2) the size distortion arising from searching over many horizons in deciding whether to reject a model. A joint test combining variance-ratio statistics at various horizons is proposed and a Monte Carlo procedure for conducting exact inference is provided. The real output data of nine countries are used to discuss these issues.

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Bibliographic Info

Article provided by American Statistical Association in its journal Journal of Business and Economic Statistics.

Volume (Year): 12 (1994)
Issue (Month): 2 (April)
Pages: 177-86

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Handle: RePEc:bes:jnlbes:v:12:y:1994:i:2:p:177-86

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Cited by:
  1. Azad, A.S.M. Sohel, 2009. "Random walk and efficiency tests in the Asia-Pacific foreign exchange markets: Evidence from the post-Asian currency crisis data," Research in International Business and Finance, Elsevier, vol. 23(3), pages 322-338, September.
  2. Amélie Charles & Olivier Darné, 2009. "Variance-Ratio Tests Of Random Walk: An Overview," Journal of Economic Surveys, Wiley Blackwell, vol. 23(3), pages 503-527, 07.
  3. Bley, Jorg, 2011. "Are GCC stock markets predictable?," Emerging Markets Review, Elsevier, vol. 12(3), pages 217-237, September.
  4. Eduardo Jose Araujo Lima & Benjamin Miranda Tabak, 2004. "Tests of the random walk hypothesis for equity markets: evidence from China, Hong Kong and Singapore," Applied Economics Letters, Taylor & Francis Journals, vol. 11(4), pages 255-258.
  5. Tabak, Benjamin M. & Lima, Eduardo J.A., 2009. "Market efficiency of Brazilian exchange rate: Evidence from variance ratio statistics and technical trading rules," European Journal of Operational Research, Elsevier, vol. 194(3), pages 814-820, May.

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