The Herfindahl-Hirschman Index Is Measured by

Multiple Choice

The Herfindahl-Hirschman index is measured by

A) adding the market shares of all firms in an industry.
B) adding the squares of the market shares of all firms in an industry.
C) squaring the sum of the market shares of the all firms in an industry.
D) adding the market shares of the four largest firms in an industry.