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What is the meaning of a four-firm concentration ratio of 50 percent?

Answer:
A four-firm concentration ration of 50 percent means that the top four firms of a particular industry produce 50% of the total output for the entire industry. The higher the concentration ration, the closer the industry becomes to an oligopoly or a monopoly.
First answer by ID3535343325. Last edit by Kacey Vowell. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 10 [recommend question].