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econ 101
chapter 4
45
Economics
Undergraduate 1
12/10/2009

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Term
demand
Definition
a relationship between price and quantity demanded of a certain good or service
Term
quantity demanded
Definition
the total number of units of a good or service puchased at a certain price
Term
law of demand
Definition
the common relationship that a higher price leads to a low quantity demanded of a good or service
Term
demand schedule
Definition
a table that shows a range of prices for a certain good or service and the quantity demanded at each price
Term
demand curve
Definition
a line that shows the relationship between price an quantity demanded of a certain good or service on the horizontal axis and the price on the vertical axis
Term
supply
Definition
a relationship etween price and the quantity supplied of a certain good or service
Term
quantity supplied
Definition
the total number of units of a good or service sold at a certain price
Term
law of supply
Definition
the common relationship that a higher price is associated with a greater quantity supplied
Term
supply schedule
Definition
a table that shows a range of prices for a good or service and the quantity supplied at each price
Term
supply curve
Definition
a line that shows the relationship between price and quantity supplied on a graph, with quantity supplied on the horizontal axis and price on the vertical axis
Term
equilibrium price
Definition
the price where quantity demanded is equal to the quantity supplied
Term
equilibrium quantity
Definition
the quantity at which quantity demanded and quanitity supplied are equal at a certain price
Term
equilibrium
Definition
the comination of price and quantity where there is no economic pressure from surpluses or shortages that would cause price or quantity to shift
Term
excess supply
Definition
when at the existing price, quantity supplied exceeds the quantity demanded;also called a "surplus"
Term
surplus
Definition
when at the existing price, quantity supplied exceeds the quantity demanded; also called "excess supply"
Term
excess demand
Definition
at the existing price, the quantity demanded exeeds the quantity supplied, also called "shortage"
Term
shortage
Definition
at the existing price, the quantity demanded exceeds the quantity demanded exceeds the quantity supplied also called "excess demand"
Term
ceteris paribus
Definition
other things being equal
Term
shift in demand
Definition
when a change in some economic factor related to demand causes a different quantity to be demanded at every price
Term
reasons for a shift in demand
Definition
1)change in taste
2)population
3)change of income
4)price of substitutes and compliments
5)future expectations
Term
normal goods
Definition
where the quantity demanded rises as income rises
Term
inferior goods
Definition
good where the quantity demanded alls as income rises.
Term
substitutes
Definition
goods that can replace each other to some extent, so that greater consumption of one good can mean less of the other
Term
complements
Definition
goods that are often used together, o that consumption of oe good tends to increas consumption of the ther
Term
shift in supply
Definition
when a change in some economic factor related to supply causes a quantity to be supplied at every price
Term
reasons for shift in supply curve
Definition
1)natual conditions
2)input prices
3)chnges in technology
4)government taxes
5)regulations
6)subsidies
Term
price controls
Definition
government laws to regulate prices
Term
price ceiling
Definition
a law that prevents a price from rising above a certain level
Term
price floor
Definition
a law tht prevents a price from falling below a certain level
Term
consumer surplus
Definition
the venefit consumers receive from buying a good or service, measure by what the individuals would have been willing to pay minus the amount that they actually paid
Term
producer surplus
Definition
the benefit producers reveive from selling a good or service, measure by the price producer actually received minus the price the producer would have been willing to accept
Term
social surplus
Definition
the sum of consumer and producer surplus
Term
deadweight loss
Definition
the loss in social surplus that occurs when a market produces an inefficient quantity
Term
an increase in demand leads what kind of movement?
Definition
movement along supply curve to a higher equilibrium price and a higher equilibrium quantity
Term
a decrease in supply leads to what kind of movement
Definition
movement along demand curve to a high equilibrium price and lower equilibrium quantity
Term
demand goes down and supply goes down; what happens to equilibrium price and quantity?
Definition
equilibrium quantity falls and price is ?
Term
supply goes up and demand goes down; what happens to equilibrium price and quantity
Definition
price falls and Q is ?
Term
reasons why the government would impose price ceiling:
Definition
government worries that producers are makin "excess" profit and government worries necessities are unaffordable
Term
what happens when a price ceiling is set below equilibrium?
Definition
quantity demanded will exceed quantity supplied and there will be a shortage
Term
consequences of price ceilings
Definition
1)inefficient allocations to consumers
2)wasted resources
3)low quality
4)black market
Term
reasons for a price floor
Definition
1)influencial groups of sellers (farmers)
2)POLICY-MAKERS DISLIKE MARKET OUTCOMES (LOW-SKILLED people get paid to little)
Term
what happens when price floors is set above equilibrium?
Definition
quantity supplied will exceed quantity demanded and there will be a surplus
Term
consequences of pric floors
Definition
1)inefficiency (greater unemployement)
2)wasted resources
3)illegal activity (black market)
4)inefficiently high "quality"
Term
incidence
Definition
who bears the tax. it si not recessarily the person who writes the check!
Term
tax revenue
Definition
the average tax rate times the quantity that is consumed at the new equilibrium
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