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Heterogeneidad Observada y no Observada en la Formación de los Precios del Ipc Colombiano

  • Juan Manuel Julio

    ()

En este trabajo se caracterizan las reglas de precios de los minoristas colombianos a través de funciones de hazard. Se enfatiza la reducción del sesgo derivado de la heterogeneidad observada como no observada en dichas funciones. El efecto de la heterogeneidad observada se reduce al estimar la hazard aniveles muy desagregados, a través de la estratificación, al incluir variables de estado y al estimar estas separadamente para incrementos y disminuciones. El efecto de la heterogeneidad no observada se reduce al introducir un término de efectos aleatorios denominado fragilidad, frailty, que permite a minoristas del mismo estrato tener rachas de precios más cortas que otros. La base de datos contiene12´052.970 reportes de precios y cubre un periodo de tiempo con inflación decreciente y otro con inflación creciente, la cual la hace ideal para estudiar la presencia de costos de menú.

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Article provided by BANCO DE LA REPÚBLICA - ESPE in its journal ENSAYOS SOBRE POLÍTICA ECONÓMICA.

Volume (Year): (2010)
Issue (Month): ()
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Handle: RePEc:col:000107:009433
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  1. Fougère, Denis & Le Bihan, Hervé & Sevestre, Patrick, 2005. "Heterogeneity in Consumer Price Stickiness: A Microeconometric Investigation," CEPR Discussion Papers 5300, C.E.P.R. Discussion Papers.
  2. Carlos Carvalho & Fernanda Nechio, 2008. "Aggregation and the PPP puzzle in a sticky-price model," Staff Reports 351, Federal Reserve Bank of New York.
  3. Carlos Carvalho, 2005. "Heterogeneity in Price Setting and the Real Effects of Monetary Shocks," Macroeconomics 0509017, EconWPA, revised 12 Sep 2005.
  4. Calvo, Guillermo A., 1983. "Staggered prices in a utility-maximizing framework," Journal of Monetary Economics, Elsevier, vol. 12(3), pages 383-398, September.
  5. Dias, Daniel & Robalo Marques, Carlos & Santos Silva, João M. C., 2005. "Time or state dependent price setting rules? Evidence from Portuguese micro data," Working Paper Series 0511, European Central Bank.
  6. Fuhrer, Jeffrey C & Moore, George R, 1995. "Monetary Policy Trade-offs and the Correlation between Nominal Interest Rates and Real Output," American Economic Review, American Economic Association, vol. 85(1), pages 219-39, March.
  7. Martin Eichenbaum & Jonas D.M. Fisher, 2003. "Testing the Calvo model of sticky prices," Economic Perspectives, Federal Reserve Bank of Chicago, issue Q II, pages 40-53.
  8. Carvalho Carlos, 2006. "Heterogeneity in Price Stickiness and the Real Effects of Monetary Shocks," The B.E. Journal of Macroeconomics, De Gruyter, vol. 6(3), pages 1-58, December.
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