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Microeconomics
Test Review II: |
I
II. Pure Competition
chapter 23 |
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| Model Characteristic |
Pure Competition |
Monopolistic Competition |
Oligopoly |
Monopoly |
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Number of companies |
Infinite |
Many |
Few |
One |
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Similarity of product |
Identical |
Different |
Standardized or Differentiated |
Not Applicable |
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Ease of new firm entry |
Very Easy |
Relatively Easy |
Very Difficult |
Not Possibl |
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Control over price |
None |
Some |
Interdependent |
Substantial |
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Non-Price competition (Advertising) |
Industrialv |
Substantial emphasizing product differentiation |
More for Consumer than Industrial Goods |
Good Will Advertising |
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Examples |
Agriculture |
Clothes |
Autos and Steel |
Utilities |
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24)
Monopoly
An increase in demand or decrease in cost would eliminate loss. |
25 Monopolistic Competition
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26)
Oligopoly
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| A loss would occur if demand fell pushing MR down and to the left or cost could go up. | |||||||||||||||||
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IV. A monopoly exists when one
firm has continued control over a unique market. A. By controlling supply and therefore price, a monopoly may earn high economic profit. B. Continued existence presupposes barriers which restrict market entry of competing firms. C. Barriers to entry 1. Economies of scale require a. Large initial capital investment b. Large R & D expenditures 2. Ownership of raw material, strategically located land, etc. 3. Patents and copyrights 4. Unfair competition 5. Natural barriers to entry lead to natural monopolies. a. Economies of scale can be so large that more than one producer is illogical. a. Natural monopolies reduce duplication, waste, and confusion. c. Natural monopolies are often privately owned and publicly regulated. d. Example: public utilities e. Deregulation in the 1980's and 1990's decreased the importance of natural monopolies. D. Economic analysis of monopoly 1. With pure competition a. P = MR = MC b. Production is at the lowest point on ATC curve. 2. With Monopoly a. P > MR = MC b. Production is not at the lowest point indicated by the ATC curve. c. Quantity produced is restricted. 3. A monopoly is a price maker. E Are monopolies inefficient 1. There are many inefficiencies. a. Lack of competition makes monopolies wasteful as there is nothing to force efficiency. b. Advertising just to enhance barriers to entry. c. Litigate to protect monopoly power d. Active politically to protect monopoly power 2. Large scale efficiencies a. Bigness creates efficiencies (economies of scale) and ATC curve may be below that of Pure Competition. b. Creates the necessary profit and profit potential required for investors to assume the risk associated with large capital investment requirements including ever-increasing R & D. |
V. A monopolistically competitive market
exists when a substantially large number of firms serve a market with relatively differentiated products. A. Examples are merchandising selling shoes, shirts, TV's,mgroceries, etc. B. Product differentiation 1.Some feel it is real and important while others feel it is artificial and unimportant. a. Non-price competition differentiators 1. Product quality 2. Product image (Branding) 3. Customer service 4. Store environment and image b. Condition for sale (location) 1. Mail order 2. Home delivery using the internet 3. Bidding on the internet C. Some control over price exists and demand tends to be more elastic than with monopoly or oligopoly markets. D. Economic analysis of monopolistic competition 1. P is high compared to pure competition (P> MR = MC) 2. Quantity will be restricted causing ATC to be higher than that indicated by the curve's lowest point. 3. Tends to be more competitive than monopoly and oligopoly. 4. Some believe economic profit tends toward zero as the number of firms adjust to varying profit levels. VI. An oligopoly market exists when barriers to entry result in a few mutually dependent companies controlling a substantial portion of a market. A. Products may be homogeneous or differentiated. B. Examples include many industrial products such as steel and large consumer durables such as appliances. C. Automobile, steel, game consoles and other oligopolistic industries lost monopoly power because of the foreign invasion beginning in the 1970's. D. Economic analysis of oligopoly 1. Restrictive oligopolies tend to be very monopolistic in nature with a. P > MR = MC b. Production is not at the lowest point indicated by the ATC curve. c. Economic profits exist and quantity is restricted. 2. Progressive oligopolies have high economic profits in spite of price decreases brought on by high-tech efficiencies. |
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VII. Factor market models |
From 27) Demand for Economic Resources
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