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Quality-Adjusted Price Measurement: A New Approach with Evidence from Semiconductors

D. Byrne1; Brian K. Kovak2; Ryan Michaels3

1 Federal Reserve Board of Governors · 2 Carnegie Mellon University · 3 Federal Reserve Bank of Philadelphia

The Review of Economics and Statistics 2017

Many markets exhibit price dispersion across suppliers of observationally identical goods. Statistical agencies typically assume this dispersion reflects unobserved quality, so standard price indexes do not incorporate price declines when buyers substitute toward lower-price suppliers. We show that long-run price differences across suppliers can be used to infer unobserved quality differences and propose an index that accommodates quality-adjusted price dispersion. Using transaction-level data on contract semiconductor manufacturing, we document substantial quality-adjusted price dispersion and confirm that a standard index is biased above our proposed index.

DOI
10.1162/rest_a_00640
Volume
99 (2)
Pages
330-342
Language
en
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