The Path-Dependence Bias in Approximating Local Price Levels by CPIs

Konstantin GLUSCHENKO

Abstract


Abstract. Lacking data on price levels across locations, economists are forced to proxy them. One method is to extrapolate the price levels known for locations in some point in time to another point by multiplying the initial price levels by the local CPIs. With the use of simulation experiments, this paper demonstrates that such a method is inadequate, since the path dependence of CPI alone produces considerable biases distorting cross-location comparisons of price levels.

Keywords. Spatial price index, Inflation; Divisia index, Nonhomothetic preferences, Demand system.

JEL. C15, C43, E31, R19.

Keywords


Spatial price index; Inflation; Divisia index; Nonhomothetic preferences; Demand system.

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References


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DOI: http://dx.doi.org/10.1453/jel.v3i1.667

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