3. The Four Types of Market Structure Copyright Š 2004 South-Western ⢠Tap water ⢠Cable TV Monopoly (Chapter 15) ⢠Novels ⢠Movies Monopolistic Competition (Chapter 17) ⢠Tennis balls ⢠Crude oil Oligopoly (Chapter 16) Number of Firms? Perfect ⢠Wheat ⢠Milk Competition (Chapter 14) Type of Products? Identical products Differentiated products One firm Few firms Many firms
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11. Figure 1 Monopolistic Competition in the Short Run CopyrightŠ2003 Southwestern/Thomson Learning Quantity 0 Price (a) Firm Makes Profit Profit- maximizing quantity Price Demand MR ATC Average total cost Profit MC
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13. Figure 1 Monopolistic Competitors in the Short Run CopyrightŠ2003 Southwestern/Thomson Learning Quantity 0 Price (b) Firm Makes Losses Demand Price Loss- minimizing quantity Average total cost MR Losses ATC MC
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15. Figure 2 A Monopolistic Competitor in the Long Run CopyrightŠ2003 Southwestern/Thomson Learning Quantity Price 0 Demand MR ATC MC Profit-maximizing quantity P = ATC
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19. Figure 3 Monopolistic versus Perfect Competition CopyrightŠ2003 Southwestern/Thomson Learning Quantity 0 Price (a) Monopolistically Competitive Firm Quantity 0 Price (b) Perfectly Competitive Firm Demand P = MC P = MR (demand curve) MC ATC MC ATC MR Efficient scale P Quantity produced Quantity produced = Efficient scale
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21. Figure 3 Monopolistic versus Perfect Competition CopyrightŠ2003 Southwestern/Thomson Learning Quantity 0 Price (a) Monopolistically Competitive Firm Quantity 0 Price (b) Perfectly Competitive Firm Demand P = MC P = MR (demand curve) Markup MC ATC MC ATC MR Marginal cost P Quantity produced Quantity produced
22. Figure 3 Monopolistic versus Perfect Competition CopyrightŠ2003 Southwestern/Thomson Learning Quantity 0 Price (a) Monopolistically Competitive Firm Quantity 0 Price (b) Perfectly Competitive Firm Demand P = MC P = MR (demand curve) Markup Excess capacity MC ATC MC ATC MR Marginal cost Efficient scale P Quantity produced Quantity produced = Efficient scale