unit 4 econ final review

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12th grade ap microeconomics

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32 Terms

1
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imperfect competition

- monopolies
- oligopolies
- monopolistic competition
- monopsonies

2
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monopoly

- single seller
- unique good, no substitutes
- price maker
- high barriers to entry
- ads

<p>- single seller<br>- unique good, no substitutes<br>- price maker<br>- high barriers to entry<br>- ads</p>
3
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price maker

firm can manipulate the price by changing the quantity it produces

4
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natural monopoly

natural for only one firm to produce because they can produce at the lowest cost

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imperfectly competitive firms graph

- downward sloping demand curve (to sell more, prices must be lowered)
- MR ≠ P

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TR at peak

MR = 0

<p>MR = 0</p>
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elastic range

monopoly only produces in what range of elasticity

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monopolists production

produces where MR = MC (quantity) but charges the price consumers are willing to pay, identified by the demand curve

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why monopolies are inefficient

- charge higher price
- don't produce enough (not allocatively efficient)
- produce at higher costs (not productively efficient)
- little incentive to innovate
- they have little external pressure to be efficient

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at MR = MC

- monopolist produce less and charge a higher price
- decreases CS and increases PS

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reasons to regulate monopolies

- keep prices low
- makes monopolies efficient

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how to regulate monopolies

- price controls: price ceilings
- taxes don't work bc taxes limit supply

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where to put price ceiling

- socially optimal price
- fair return price/ break even

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unregulated monopoly production

B (point on demand curve that's above MR = MC point)

<p>B (point on demand curve that's above MR = MC point)</p>
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socially optimal

- allocative efficiency
- where MC = D on graph

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fair return

- no economic profit
- where ATC = D on graph

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regulating natural monopoly

price ceiling to get socially optimal quantity would cause the firm to make a loss and require a subsidy

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price discrimination

selling the same products to different buyers at different prices

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price discrimination conditions

- have monopoly power
- segregate market
- consumers can't resell product

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price discrimination results

- several prices
- more profit
- no CS
- higher socially optimal quantity

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monopolistic competition

- large number of sellers
- differentiated products
- some control over price
- low barriers to entry
- ADVERTISING
- not efficient
- D > MR

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nonprice competition

- branding
- service
- location
- advertising: increase demand and make it inelastic

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long run monopolistic competition

- new firms will enter, driving down the demand for firms already in the market
- firms enter until there is no economic profit
- equilibrium: quantity where MR = MC up to P = ATC
- excess capacity

<p>- new firms will enter, driving down the demand for firms already in the market<br>- firms enter until there is no economic profit<br>- equilibrium: quantity where MR = MC up to P = ATC<br>- excess capacity</p>
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short run profits

- new firms enter = more substitutes, less market shares for existing firms
- demand for each firm falls

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short run losses

- firms exit = less substitutes, more market shares for remaining firms
- demand for each firm rises

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monopolistically competitive efficiency

- not allocatively efficient (P ≠ MC)
- not productively efficient (production ≠ minimum ATC)

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excess capacity

- firm can produce at the lowest costs (minimum ATC) but they decide not to
- gap between minimum ATC output and profit maximizing output

<p>- firm can produce at the lowest costs (minimum ATC) but they decide not to<br>- gap between minimum ATC output and profit maximizing output</p>
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oligopoly

- few large producers
- identical or differentiated products
- high barriers to entry
- price maker
- interdependence (strategic pricing)
- collude to gain profit

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oligopoly barriers to entry

- economies of scale
- high start up costs
- ownership of raw materials

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game theory

- study of how people behave in strategic situations
- helps firms in an oligopoly maximize profit

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dominant strategy

best move to make regardless of what your opponent does

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collusion

- act of cooperating with rivals in order to "rig" a situation
- results in the incentive to cheat
- gains profit
- firms act as a monopoly and share the profit