A Herfindahl-Hirschman Index is calculated by

A) summing the amount of sales by the four largest firms and dividing by total industry sales.
B) summing the squares of the market shares of each firm in the industry.
C) dividing the number of firms wanting to merge by the total number in the industry.
D) dividing the advertising expenditures of the firms that want to merge by total industry advertising expenditures.

B

Economics

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