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Keywords:

  • pointspreads;
  • regression to mean;
  • betting odds

Abstract

Football performances are an imperfect measure of abilities, and consequently exaggerate differences in abilities. The skills of those football teams that perform the best and the worst are not really that far from average; thus their future performances regress to the mean. Betting data indicate that gamblers do not fully account for this regression. Copyright © 2002 John Wiley & Sons, Ltd.