Principles of Economics N. Gregory Mankiw (Key
Concepts) Chapter 4, Principles of Economics by N.
Gregory Mankiw WITH WELL DETAILED ANSWERS 2026
Market - ANSWER☑️⭐-A group of buyers and sellers of a particular good or service
Competitive Market - ANSWER☑️⭐-A market in which there are many buyers and many sellers so that
each has a negligible impact on the market price
Quantity Demanded - ANSWER☑️⭐-The amount of a good that buyers are willing and able to purchase
Law of Demand - ANSWER☑️⭐-The claim that, other things being equal, the quantity demanded of a
good falls when the price of the good rises
Demand Schedule - ANSWER☑️⭐-A table that shows the relationship between the price of a good and
the quantity demanded
Demand Curve - ANSWER☑️⭐-A graph of the relationship between the price of a good and the quantity
demanded
Normal Good - ANSWER☑️⭐-A good for which, other things being equal, an increase in income leads to
an increase in demand
Inferior Good - ANSWER☑️⭐-A good for which, other things being equal, an increase in income leads to
a decrease in demand
Substitutes - ANSWER☑️⭐-Two goods for which an increase in the price of one leads to an increase in
the demand for the other
, Complements - ANSWER☑️⭐-Two goods for which an increase in the price of one leads to a decrease in
the demand for the other
Quantity Supplied - ANSWER☑️⭐-The amount of a good that sellers are willing and able to sell
Law of Supply - ANSWER☑️⭐-The claim that, other things being equal, the quantity supplied of a good
rises when the price of the good rises
Supply Schedule - ANSWER☑️⭐-A table that shows the relationship between the price of a good and the
quantity supplied
Supply Curve - ANSWER☑️⭐-A graph of the relationship between the price of a good and the quantity
supplied
Equilibrium - ANSWER☑️⭐-A situation in which the market price has reached the level at which quantity
supplied equals quantity demanded
Equilibrium Price - ANSWER☑️⭐-The price that balances quantity supplied and quantity demanded
Equilibrium Quantity - ANSWER☑️⭐-The quantity supplied and the quantity demanded at the
equilibrium price
Surplus - ANSWER☑️⭐-A situation in which quantity supplied is greater than quantity demanded
Shortage - ANSWER☑️⭐-A situation in which quantity demanded is greater than quantity supplied
Law of Supply and Demand - ANSWER☑️⭐-The claim that the price of any good adjusts to bring the
quantity supplied and the quantity demanded for that good into balance
Concepts) Chapter 4, Principles of Economics by N.
Gregory Mankiw WITH WELL DETAILED ANSWERS 2026
Market - ANSWER☑️⭐-A group of buyers and sellers of a particular good or service
Competitive Market - ANSWER☑️⭐-A market in which there are many buyers and many sellers so that
each has a negligible impact on the market price
Quantity Demanded - ANSWER☑️⭐-The amount of a good that buyers are willing and able to purchase
Law of Demand - ANSWER☑️⭐-The claim that, other things being equal, the quantity demanded of a
good falls when the price of the good rises
Demand Schedule - ANSWER☑️⭐-A table that shows the relationship between the price of a good and
the quantity demanded
Demand Curve - ANSWER☑️⭐-A graph of the relationship between the price of a good and the quantity
demanded
Normal Good - ANSWER☑️⭐-A good for which, other things being equal, an increase in income leads to
an increase in demand
Inferior Good - ANSWER☑️⭐-A good for which, other things being equal, an increase in income leads to
a decrease in demand
Substitutes - ANSWER☑️⭐-Two goods for which an increase in the price of one leads to an increase in
the demand for the other
, Complements - ANSWER☑️⭐-Two goods for which an increase in the price of one leads to a decrease in
the demand for the other
Quantity Supplied - ANSWER☑️⭐-The amount of a good that sellers are willing and able to sell
Law of Supply - ANSWER☑️⭐-The claim that, other things being equal, the quantity supplied of a good
rises when the price of the good rises
Supply Schedule - ANSWER☑️⭐-A table that shows the relationship between the price of a good and the
quantity supplied
Supply Curve - ANSWER☑️⭐-A graph of the relationship between the price of a good and the quantity
supplied
Equilibrium - ANSWER☑️⭐-A situation in which the market price has reached the level at which quantity
supplied equals quantity demanded
Equilibrium Price - ANSWER☑️⭐-The price that balances quantity supplied and quantity demanded
Equilibrium Quantity - ANSWER☑️⭐-The quantity supplied and the quantity demanded at the
equilibrium price
Surplus - ANSWER☑️⭐-A situation in which quantity supplied is greater than quantity demanded
Shortage - ANSWER☑️⭐-A situation in which quantity demanded is greater than quantity supplied
Law of Supply and Demand - ANSWER☑️⭐-The claim that the price of any good adjusts to bring the
quantity supplied and the quantity demanded for that good into balance
