The fraction of an industry's sales that are accounted for by the four largest firms is called

Name: The fraction of an industry's sales that are accounted for by the four largest firms is called
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The term used to describe the fraction of an industry's sales that are accounted for by the four largest firms is the four-firm concentration ratio. It is commonly used as a measure of market concentration and is calculated by adding the market shares of the four largest firms in the industry.

The Fraction of an Industry's Sales That Are Accounted for by the Four