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Un critère pour les perspectives aléatoires : l'indice G0

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  • Max Pinhas

Abstract

[fre] Décider si un investissement est préférable à un autre exige non seulement la connaissance de l'espérance mathématique de leur profit respectif mais aussi celle des garanties qu'ils offrent face au risque de ruine.. L'objet de cette étude est de définir une famille d'indices qui permettent à l'investisseur de classer ses projets suivant un ordre lié à son goût du risque. L'auteur se propose de montrer que dans le modèle de l'entreprise commerciale ces indices constituent un outil particulièrement commode. En effet, d'une part leur construction est très rapide (méthode graphique ou résolution d'une équation du second degré), d'autre part leur emploi donne des réponses simples à des problèmes tels que :. recherche de la taille optimale d'un investissement commercial ;. répartition optimale des capitaux entre deux établissements indépendants ;. opportunité de la fusion de deux entreprises commerciales.. Enfin, il est possible d'adapter ces indices en vue de leur utilisation pour certains modèles d'assurance. [eng] In order to decide if an investment is better than another one it is necessary to know not only the means of the profits they both yield but also what guarantees they present in front of the risk of ruin.. The purpose of this study is to define a family of indexes which allow the investor to classify his projects according to his riskaversion.. The author tries to show these indexes are particulary helpful in the model of business enterprises. In fact, their construction is elementary, and the use of them gives simple answers to problems as :. the research of the best size for a business investment ;. the optimal distribution of capital between two indepenclent establishments ;. the opportuneness of the blending of two enterprises.. At last it is possible to adapt the indexes to some insurance models.

Suggested Citation

  • Max Pinhas, 1970. "Un critère pour les perspectives aléatoires : l'indice G0," Revue Économique, Programme National Persée, vol. 21(4), pages 635-659.
  • Handle: RePEc:prs:reveco:reco_0035-2764_1970_num_21_4_407932
    DOI: 10.3406/reco.1970.407932
    Note: DOI:10.3406/reco.1970.407932
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