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1980 ou les vicissitudes de la prévision

Author

Listed:
  • Michèle Debonneuil
  • Mathieu Féroldi
  • Claude Peyroux
  • Henri Sterdyniak

Abstract

[eng] If we compare, for certain magnitudes, the trends observed in 1980 and those derived from the econometric equations of the METRIC model, some significant divergences emerge. Particularly, the rate of savings of households dropped more than expected, while exports did not develop as strongly as predicted, investments and producer's supply were larger than foreseen, and the price trends of industrial firms were less inflationary than they should have been. The article attempts to answer the questions raised by such discrepancies. What is the size of the differences between observed data and econometric results? What are the explanatory variables which accounted relatively well for these phenomena until 1979, but were inadequate in 1980? What interpretations can be advanced in explanation of the particular profile of 1980? [fre] Lorsqu'on rapproche, pour certaines grandeurs, les évolutions constatées en 1980 et celles qui dérivent des équations économétriques du modèle METRIC, des divergences notables apparaissent : en particulier, le taux d'épargne des ménages a « trop » chuté, les exportations ne se sont « pas assez » développées, l'investissement a été « trop » soutenu, l'offre des producteurs a été « trop » importante, les entreprises industrielles ont eu un comportement de prix « trop peu » inflationniste. Sur ces différents points, l'article s'interroge : quelle est l'ampleur des écarts entre les faits et les résultats économétriques: quelles sont ces variables explicatives qui rendent assez bien compte des phénomènes jusqu'en 1979 mais sont en défaut en 1980; quelles interprétations peut-on avancer pour expliquer le profil particulier de 1980? [spa] Al cotejarse, respecto a algunas magnitudes, las evoluciones observadas en 1980 y las que se desprenden de las ecuaciones econométricas del modelo METRIC, se manifiestan patentes divergencias : en especial, la tasa de ahorro de los hogares se vino « demasiado » de menos, las expor- taciones no se desarrollaron « suficientemente », la inversion fué « demasiado » sostenida, la oferta de los productores fué « demasiado » importante, las empresas industriales, en materia de precios, tuvieron un comportamiento que no era « bastante » inflacionista. El artículo plantea una interrogante acerca de estos diversos puntos : ¿cual es la magnitud de los descartes entre los hechos y los resultados econométricos? ¿cuales son estas variables explicativas que dan cuenta bastante bien de los fenómenos hasta 1979 pero que fallan en 1980? ¿que interpretaciones pueden emitirse para explicar el peculiar perfil de 1980?

Suggested Citation

  • Michèle Debonneuil & Mathieu Féroldi & Claude Peyroux & Henri Sterdyniak, 1981. "1980 ou les vicissitudes de la prévision," Économie et Statistique, Programme National Persée, vol. 135(1), pages 21-34.
  • Handle: RePEc:prs:ecstat:estat_0336-1454_1981_num_135_1_4508
    DOI: 10.3406/estat.1981.4508
    Note: DOI:10.3406/estat.1981.4508
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