4. Market Forces/ Supply & Demand Flashcards
supply & demand
determine prices in a market and how prices, in turn, allocate the economy’s scarce resources
refer to the behavior of people as they interact with one another in markets
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
market
a group of buyers and sellers of a particular good or service
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
competitive market
a market in which there are many buyers and sellers so that each has a negligible impact on the market price
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
quantity demand
the amount of a good that buyers are willing and able to purchase
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
law of demand
the claim that other things equal, the quantity demanded of a good falls when the price of the good rises
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
normal good
a good for which, other things equal, an increase in income leads to an increase in demand
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
inferior good
a good for which, other things equal, an increase in income leads to a decrease in demand
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
substitutes
2 goods for which an increase in the price of 1 leads to an increase in the demand for the other
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
complements
2 goods for which an increase in the price of 1 lead to a decrease in the demand for another
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
demand schedule
a table that shows the relationship between the price of a good and the quantity demanded
page 69
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
demand curve
a graph of the relationship between the price of a good and the quantity demanded
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
ceteris paribus
Latin- “other things being equal,” to signify that all the relevant variables, except those being studied at the moment, are held constant
page 70
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
shifts in the demand curve versus movements along the demand curve
shifts = changes in quantity
movement = changes in price
page 74
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
shifts in the demand curve
RIGHT: any change that increases the quantity demanded at a given price shifts the demand curve to the right
LEFT: any change that decreases the quantity buyers wish to purchase at a given price shifts the demand curve to the left
page 72
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
demand curve
shows what happens to the quantity demanded of a good when its price varies, holding constant all other determinants of quality demanded.
when one of these other determinants changes, the demand curve shifts, left
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
movement along a demand curve
Bc price is on the verticle axis when we graph a demand curve, a change in price does not shift the curve but represents a movement along it
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
quantity supplied
the amount of a good that sellers are willing and able to sell
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
law of supply
other things equal, the quantity supplied of a good rises when the price of the good rises
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
what determines the quantity an individual supplies?
- price
- input price
- technology
- expectations
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
supply schedule
shows the relationship between the price of a good and the quantity supplied
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
supply curve
relationship between the price of a good and the quantity supplied
page 76
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
shifts in the supply curve
RIGHT, any change that raises quantity supplied at every priceshifts the supply curve to the right
LEFT, any change that reduces the quantity supplied at every price shifts the supply curve to the left
page 78
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
individual & market supply schedules
the quantity supplied in a market is the sum of the quantities supplied by all the sellers
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
market supply as the sum of individual supplies
is found by adding horizontally the individual supply curves
page 79
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
equilibrium
when supply and demand have been brought into balance
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
equilibrium price
the price that balances supply and demand
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
equilibrium quantity
the quantity supplied and the quantity demanded when the price has adjusted to balance supply and demand
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
the equilibrium of supply and demand
is found where the supply and demand curves intersect
page 80
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
equilibrium price
aka. market-clearing price
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
equilibrium price
the price at which, the quantity of the goods buyers are willing and able to buy exactly balances the quantity that sellers are willing and able to sell
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
surplus
quantity supplied is greater than quantity demanded
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
shortage
quantity demanded is greater than quantity supplied
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
law of supply and demand
the claim that the price of any goo adjusts to bring the supply and demand for that good into balance
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
3 steps to analyzing changes in equilibrium
- decide whether the event shifts the supply curve or demand curve, or both
- decide which direction the curve shifts
- use the supply-and-demand diagram to see how the shift changes the equilibrium
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
how an increase in demand affects the equilibrium
page 84 w- graph
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
how a decrease in supply affects the equilibrium
page 85, w-graph
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
a shift in both supply & demand
page 86, w-graph
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
what happens to price & quantity when supply or demand shifts?
page 87, table 4-8
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
how prices allocate resources
page 88, it’s a nice read : )
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.
summary
review ?’s
page 89
page 90
Mankiw, N. (2023). Principles of Economics (second edition, 62-89). Macmillan Learning Inc.