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Relative Price Variability and Inflation in a Fixed Price Regime
Rodrigo Cerda
Rolf Lüders

PUC Economics Institute Working Paper, No. 395, 2011.
ISSN: Print 0716-7334 Electronic 0717-7593

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We study the relation between inflation rate and relative price variability using data of prices on 23 disaggregated food items since 1960 to 2003 in Chile. The behavior of inflation rate is quite variable in that country during that time span and more interestingly, there are periods of time in which prices were determined (fixed) by the economic authorities. We find consistent evidence that a larger inflation rate causes a larger relative price variability and this effect is much larger in periods in which prices were fixed. We interpret that result as firms over-reacting to inflation when setting their relative prices if they assume that it is unlikely to reset their prices in the near future. That result holds even if we follow different econometric approaches and it holds for all the food products considered.

Clasification JEL: E3, N1
Keyword: IInflation, price dispersions
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