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Estimating Probabilities Relevant to Calculating Relative Risk-Corrected Returns of Alternative Portfolios


  • Samuelson, Paul A


In making all-or-none choices between alternative securities, Samuelson (1997) suggested that investors of different risk-aversion should calculate from past samples of those securities their relevant Harmonic Means, or Geometric means, or other associative means representative of their respective degrees of relative-risk-aversion. Here it is shown how this learning procedure can be improved upon when you have prior knowledge that the securities have log-Normal distributions. Classical estimation theory, concerning consistent, efficient, and sufficient statistics, is shown to have a cash value by means of the calculable measure of (ex ante) "risk-corrected certainty equivalents." Needed qualifications and testings are also presented. Copyright 1997 by Kluwer Academic Publishers

Suggested Citation

  • Samuelson, Paul A, 1997. "Estimating Probabilities Relevant to Calculating Relative Risk-Corrected Returns of Alternative Portfolios," Journal of Risk and Uncertainty, Springer, vol. 15(3), pages 191-200, December.
  • Handle: RePEc:kap:jrisku:v:15:y:1997:i:3:p:191-200

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    References listed on IDEAS

    1. Jia, Jianmin & Dyer, James S & Butler, John C, 2001. "Generalized Disappointment Models," Journal of Risk and Uncertainty, Springer, vol. 22(1), pages 59-78, January.
    2. Sarin, Rakesh K. & Weber, Martin, 1993. "Risk-value models," European Journal of Operational Research, Elsevier, vol. 70(2), pages 135-149, October.
    3. Charles A. Holt & Susan K. Laury, 2002. "Risk Aversion and Incentive Effects," American Economic Review, American Economic Association, vol. 92(5), pages 1644-1655, December.
    4. Harless, David W & Camerer, Colin F, 1994. "The Predictive Utility of Generalized Expected Utility Theories," Econometrica, Econometric Society, vol. 62(6), pages 1251-1289, November.
    5. Kahneman, Daniel & Tversky, Amos, 1979. "Prospect Theory: An Analysis of Decision under Risk," Econometrica, Econometric Society, vol. 47(2), pages 263-291, March.
    6. Keller, L. Robin & Sarin, Rakesh K. & Weber, Martin, 1986. "Empirical investigation of some properties of the perceived riskiness of gambles," Organizational Behavior and Human Decision Processes, Elsevier, vol. 38(1), pages 114-130, August.
    7. Elke U. Weber & Richard A. Milliman, 1997. "Perceived Risk Attitudes: Relating Risk Perception to Risky Choice," Management Science, INFORMS, vol. 43(2), pages 123-144, February.
    8. John W. Payne & Dan J. Laughhunn & Roy Crum, 1980. "Translation of Gambles and Aspiration Level Effects in Risky Choice Behavior," Management Science, INFORMS, vol. 26(10), pages 1039-1060, October.
    9. Graham Loomes & Robert Sugden, 1986. "Disappointment and Dynamic Consistency in Choice under Uncertainty," Review of Economic Studies, Oxford University Press, vol. 53(2), pages 271-282.
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