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Comparing Price Levels across Countries Using Minimum-Spanning Trees

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  • Robert J. Hill

Abstract

It is shown how a comparison of price levels across a group of countries can be made by chaining bilateral price indexes across a spanning tree. It is argued that we should use the spanning tree whose resulting multilateral price indexes are least sensitive to the choice of bilateral formula. This minimum-spanning tree can be easily computed using Kruskal's algorithm. Results obtained by chaining Fisher indexes across a minimum-spanning tree are compared with the Penn World Table. © 1999 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology

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  • Robert J. Hill, 1999. "Comparing Price Levels across Countries Using Minimum-Spanning Trees," The Review of Economics and Statistics, MIT Press, vol. 81(1), pages 135-142, February.
    • Handle: RePEc:tpr:restat:v:81:y:1999:i:1:p:135-142
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