ESTIMATING THE SIZE DISTRIBUTION OF FIRMS USING GOVERNMENT SUMMARY STATISTICS

Using a maximum entropy technique, we estimate the market shares of each firm in an industry using the available government summary statistics such as the four-firm concentration ratio (C4) and the Herfindahl-Hirschmann Index (HHI). We show that our technique is very effective in estimating the distribution of market shares in 20 industries. Our results provide support for the recent practice of using HHI rather than C4 as the key explanatory variable in many market power studies, if only one measure is to be used.


Issue Date:
1995
Publication Type:
Working or Discussion Paper
DOI and Other Identifiers:
Record Identifier:
https://ageconsearch.umn.edu/record/25081
PURL Identifier:
http://purl.umn.edu/25081
Total Pages:
19
Series Statement:
Working Paper 696, Revised, April 1995




 Record created 2017-04-01, last modified 2020-10-28

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