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Posted by: Pris on 2010-07-21, 08:43:10
Do you want the definition or how to calculate herfindahl? Definition: The Herfindahl index, also known as Herfindahl-Hirschman Index or HHI, is a measure of the size of firms in relation to the industry and an indicator of the amount of competition among them. Named after economists Orris C. Herfindahl and Albert O. Hirschman, it is an economic concept widely applied in competition law, antitrust and also technology management. It is defined as the sum of the squares of the market shares of the 50 largest firms (or summed over all the firms if there are fewer than 50) within the industry, where the market shares are expressed as fractions. How to calculate it: Please refer to this site ehow.com/ how_5136910_calculate-herfindahl-index.html Hope I helped |
