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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Definitions:

Price Change

A fluctuation in the market price of a good or service over a specific period.

Initial Endowment

The initial allocation of goods, resources, or money which an individual or entity possesses at the start of a consideration period.

Weak Axiom

A principle in consumer theory that, if a consumer chooses bundle A over bundle B when both are affordable, they will not choose B over A if A's price decreases and B's price stays the same or increases.

Revealed Preference

A theory that determines a consumer's preferences based on their purchasing behavior, under the assumption that their choices reveal their valuation of goods.