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Oligopoly

Edexcel 9EB0T4-1cA-levelLesson packSubscription
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  • about 50 minutes
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A market has a 4-firm concentration ratio (CR4) of 92%. What does this figure suggest about the market's structure?

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About this resource

Edexcel Economics B (9EB0) Theme 4 'Making markets work' (Paper 1), Unit T4-1 'Competition and market power' — spec ref 4.1.3. What an oligopoly is (a market dominated by a few large firms, high barriers to entry, product may be differentiated or homogeneous); measuring market dominance with the…

24 slides.

Lesson outline

  1. Do Now — Retrieval
  2. Hinge Check — What Does 'Rigid' Mean Here?
  3. What Is an Oligopoly?
  4. Hinge Check — Does the Product Have to Be Identical?
  5. Measuring Dominance — The Concentration Ratio
  6. Reading a Concentration Ratio Chart
  7. Guided Practice — Calculate a Concentration Ratio
  8. Hinge Check — Interpreting a Concentration Ratio
  9. Interdependence and Price Rigidity
  10. Hinge Check — Will Cutting Price Win More Customers?
  11. Collusion — Overt and Tacit
  12. Hinge Check — Is 'No Written Agreement' a Legal Loophole?
Unit bundleTheme 4 · Making markets work
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