Which of the following are measures of industry concentration?

Question

Quizplus · Accepted Answer

The Four-firm concentration ratio and HHI index are both commonly used measures of industry concentration. The Four-firm concentration ratio calculates the market share held by the top four firms in an industry, while the HHI index takes into account the entire market share distribution of all firms in an industry. Consumer surplus, on the other hand, is not a measure of industry concentration but rather a measure of the benefit consumers receive from a good or service beyond what they paid for it.

Which of the Following Are Measures of Industry Concentration