Economics A-Level
Concentration ratio
What Concentration ratio means in Economics A-Level, as defined for AQA.
Definition of Concentration ratio
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Reference: AQA
A measure of the extent to which a market is dominated by a few large firms, calculated by summing the individual market shares of the top 'n' firms.
Topics that use Concentration ratio
- Oligopoly (AQA A-Level)
Related terms
- Barriers to entry
- Cartel
- Cartels
- Collusion
- Concentration ratios
- Cooperation
- Dynamic efficiency
- Firm behaviour
Using Concentration ratio in the exam
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