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Economics
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the study of how society manages its scarce resources, the study of choice
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Scarcity
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Demand is greater than supply
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Productive Efficiency
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Products are being produced in the least costly way
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Allocative Efficiency
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The products being produced are the ones most desired by society
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Command Economy
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An economic system in which the government controls a country's economy.
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Free Market Economy
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a system in which prices are not controlled by the government
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Mixed Economy
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Economy partially controlled by the government
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Import Quotas
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the government sets the maximum amount of a product that can come into the country
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Quota
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a limit on a number of exports
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Subsidies
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government gives producers money
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Excise Taxes
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a per unit tax on producers
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Demand
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the different quantities of goods that consumers are willing and able to buy at different prices
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Law of Demand
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there is an inverse relationship between price and quantity demanded
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The Substitution Effect
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if the price goes up for a product, consumers will buy less of that product and more of another substitute product
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The Income Effect
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if the price goes down for a product, the purchasing power increases for consumers, allowing them to purchase more
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Law of Diminishing Marginal Utility
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The more you buy of ANY GOOD the less satisfaction you get from each new unit consumed.
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Ceterus Paribus
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all other things held constant
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Shifters of Demand
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1. Tastes and Preferences
2. Number of Consumers
3. Price of Related Goods
4. Income
5. Future Expectations
2. Number of Consumers
3. Price of Related Goods
4. Income
5. Future Expectations
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Shifters of Supply
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1. Prices/Availability of Resources
2. Number of Sellers
3. Technology
4. Government Action
5. Expectations of Future Profit
2. Number of Sellers
3. Technology
4. Government Action
5. Expectations of Future Profit
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Substitutes
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goods used in place of one another
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Complements
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two goods that are bought and used together
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Normal Goods
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Goods for which demand goes up when income is higher and for which demand goes down when income is lower.
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Inferior Goods
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Goods for which demand tends to fall when income rises.
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Supply
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The amount of goods available
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Law of Supply
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there is a direct relationship between price and quantity supplied
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Price Ceiling
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A legal maximum on the price at which a good can be sold
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Price Floor
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A legal minimum on the price at which a good can be sold
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Elasticity
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shows how sensitive quantity is to a change in price
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Price Elasticity of Demand
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measurement of consumers responsiveness to a change in price
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Inelastic Demand
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quantity is insensitive to a change in price
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Elastic Demand
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quantity is sensitive to a change in price
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Characteristics of Inelastic Demand
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Few substitutes, necessities, small portion of income, required now, elasticity coefficient is less than 1
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Characteristics of Elastic Demand
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Not a necessity, many substitutes, large portion of income, plenty of time to decide, elasticity coefficient is more than 1
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Perfectly Elastic
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horizontal line
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Perfectly Inelastic
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vertical line
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Unit Elastic
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when the percentage change in price and quantity demanded are the same
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Total Revenue
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Price x Quantity
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Cross-Price Elasticity of Demand
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how sensitive a product is to a change in the price of another good
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Income Elasticity of Demand
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shows how sensitive a product is to a change in income
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Price Elasticity of Supply
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shows how sensitive producers are to a change in price
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World Price
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the price of a good that prevails in the world market for that good
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Tariff
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A tax on imported goods
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Tax Incidence
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who actually pays for an excise tax
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Utility Maximizing Rule
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the consumer's money should be spent so that the marginal utility per dollar of each goods equal each other
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Dead Weight Loss
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The lost net benefit to society caused by a movement away from the competitive market equilibrium, such as a tax
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Milk
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milk
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Surplus
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supply is greater than demand