Merger Guidelines Developed by the U

question 119

Multiple Choice

Merger guidelines developed by the U.S.Department of Justice and the Federal Trade Commission use the Herfindahl-Hirschman Index as a measure of concentration.This index measures concentration in an industry by

• A)adding up the market shares of all firms in the industry, squaring this number and then dividing by the number of firms in the industry.
• B)squaring the market shares of each firm in an industry and then adding up the values of the squares.
• C)squaring the four-firm concentration ratio of the industry and dividing this number by the total number of firms in the industry.
• D)determining the market shares of the four largest firms in the industry, but unlike the concentration ratio, the Index includes sales in the United States by foreign firms.

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