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market
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group of buyers and sellers of a particular product
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competitive market
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one with many buyers and sellers, each has a negligible effect on price
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perfectly competitive market
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all goods are exactly the same
buyers and sellers have no affect on market price "price taker"
buyers and sellers have no affect on market price "price taker"
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quantity demanded
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the amount of the good that buyers are willing and able to purchase
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law of demand
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the claim that the quantity demanded of a good falls when the price of the good rises, other things equal
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demand schedule
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a table that shows the relationship between the price of a good and the quantity demanded
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demand curve shift to right
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number of buyers
increases
increases
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demand curve shift to right
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demand for normal good
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demand curve shift to left
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demand for inferior good
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number of buyers, income, prices of related goods, tastes, expectations
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shifts in demand curve
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substitutes
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two goods in which an increase in the price of one causes an increase in demand for the other
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complements
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two goods in which an increase in the price of one causes a fall in demand for the other
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quantity supplied
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the amount that sellers are willing and able to sell
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law of supply
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the claim that the quantity supplied of a good rises when the price of the good rises, other things equal
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supply schedule
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table that shows the relationship between the price of a good and the quantity supplied
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input prices, technology, number of sellers, expectations
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supply curve shifters
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equilibrium
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the price where quantity supplied equals quantity demanded
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surplus
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when quantity supplied is greater than quantity demanded
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shortage
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when quantity demanded is greater than quantity supplied
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change in supply
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a shift in the S curve occurs when a non-price determinant of supply changes
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change in the quantity supplied
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a movement along a fixed S curve, occurs when P changes
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change in demand
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a shift in the D curve occurs when a non-price determinant of demand changes
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change in quantity demanded
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a movement along a fixed D curve, occurs when P changes