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Monopoly Power

  • "Any firm that can alter its price, through the adjustment of its output, is supposed to have monopoly power. The ability to charge a price higher than marginal cost is characteristic of monopoly."

  • Lerner Index:

    • Price Elasticity of Demand

    • Price Discrimination

    • Profit Rates

    • Concentration Ratios

    • Market Shares (Herfindal Index)

  • Interaction between firms (collusion)

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