The distribution of soccer leagues scores that generates the minimum of competitive balance: Truncated-Cascade Distribution
Ávila-Cano Antonio () and
Francisco Triguero-Ruiz ()
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Ávila-Cano Antonio: Department of Economics, University of Málaga
Francisco Triguero-Ruiz: Department of Languages and Computer Science, University of Málaga
No 2018-04, Working Papers from Universidad de Málaga, Department of Economic Theory, Málaga Economic Theory Research Center
Competitive balance can be measured using standardized indexes, such as the Herfindahl-Hirschman index (HHI). The standardized HHI calculus is based on knowing the maximum value of HHI. This value corresponds to the minimum value of the competitive balance. Measuring competitive balance is affected by the scoring system used. There are competitions that have scoring systems that do not award twice as many points for winning as they award for ties. In this case, the scores distribution representative of the minimum competitive balance is unstable because the total points at the end of the championship can vary. This issue has been addressed by reconstructing the results obtained in leagues. Nevertheless, this solution generates cardinal and ordinal negative effects, that we verify for the major European soccer leagues over twenty seasons. The aim of this article is to redefine the perfectly unbalanced distribution in order to construct a new one that generates the maximum level of concentration: we call this truncated-cascade distribution. Thus, we show that the instability problem does not involve recalculating the scoring based on the results. The minimum value of competitive balance is generated by a truncated-cascade distribution of results at a level that can be previously calculated. Thus, we calculate the cut-off point of the truncated-cascade distribution using a 5-grade polynomial equation obtained by recurrent calculation. Besides, we provide the cut-off points and maximum HHI values for leagues with different number of teams.
Keywords: Competitive balance; Herfindahl-Hirschman index; Perfectly unbalanced distribution; major European soccer leagues (search for similar items in EconPapers)
JEL-codes: Z20 Z21 (search for similar items in EconPapers)
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