Determination of Price and Quantity Determinants of supply and demand. Supply and Demand. ECO 120: Global Macroeconomics
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2 Goals Goals 1/ 17 Specific Goals Learn what demand is and what influences demand. Learn what supply is and what influences supply. Learn how prices and quantities are determined by supply and demand. Use these skills to make predictions about changes in price and quantity. Learning Objectives LO 2: Use the supply and demand model to predict price and quantity outcomes for markets for products and services.
3 Goals Goals 1/ 17 Specific Goals Learn what demand is and what influences demand. Learn what supply is and what influences supply. Learn how prices and quantities are determined by supply and demand. Use these skills to make predictions about changes in price and quantity. Learning Objectives LO 2: Use the supply and demand model to predict price and quantity outcomes for markets for products and services.
4 Goals Relevant Reading 2/ 17 Demand: Module 4 Supply and Equilibrium: Module 5 Changes in Equilibrium: Module 6
5 Demand Supply Equilibrium Demand 3/ 17 The quantity demanded of a good or service is the amount consumers are willing and able to buy in a given time period at a particular price. Law of demand: All other things remaining equal, the higher (lower) the price of the good, the smaller (higher) is the quantity demanded. Demand schedule/curve: a table or graph of different quantities demanded for different prices. According to the law of demand, the demand curve should be sloping. Change in quantity demanded: when there is a change in price causing a movement from one point on the demand curve to another point.
6 Demand Supply Equilibrium Demand 3/ 17 The quantity demanded of a good or service is the amount consumers are willing and able to buy in a given time period at a particular price. Law of demand: All other things remaining equal, the higher (lower) the price of the good, the smaller (higher) is the quantity demanded. Demand schedule/curve: a table or graph of different quantities demanded for different prices. According to the law of demand, the demand curve should be sloping. Change in quantity demanded: when there is a change in price causing a movement from one point on the demand curve to another point.
7 Demand Supply Equilibrium Demand 3/ 17 The quantity demanded of a good or service is the amount consumers are willing and able to buy in a given time period at a particular price. Law of demand: All other things remaining equal, the higher (lower) the price of the good, the smaller (higher) is the quantity demanded. Demand schedule/curve: a table or graph of different quantities demanded for different prices. According to the law of demand, the demand curve should be sloping. Change in quantity demanded: when there is a change in price causing a movement from one point on the demand curve to another point.
8 Demand Supply Equilibrium Demand 3/ 17 The quantity demanded of a good or service is the amount consumers are willing and able to buy in a given time period at a particular price. Law of demand: All other things remaining equal, the higher (lower) the price of the good, the smaller (higher) is the quantity demanded. Demand schedule/curve: a table or graph of different quantities demanded for different prices. According to the law of demand, the demand curve should be sloping. Change in quantity demanded: when there is a change in price causing a movement from one point on the demand curve to another point.
9 Demand Supply Equilibrium Demand 3/ 17 The quantity demanded of a good or service is the amount consumers are willing and able to buy in a given time period at a particular price. Law of demand: All other things remaining equal, the higher (lower) the price of the good, the smaller (higher) is the quantity demanded. Demand schedule/curve: a table or graph of different quantities demanded for different prices. According to the law of demand, the demand curve should be sloping. Change in quantity demanded: when there is a change in price causing a movement from one point on the demand curve to another point.
10 Demand Supply Equilibrium Demand 4/ 17 Demand Curve Demand Schedule Point Price Q D A B C D E 2.5 2
11 Demand Supply Equilibrium Income and Substitution effects 5/ 17 The demand curve is downward sloping because of the income and substitution effect. Substitution effect: when the price of a good rises, people may buy substitute goods instead. Income effect: When the price of a good rises, the real purchasing power of your income decreases. When the real value of your income decreases, you buy less of everything. Close to correct. More on the income effect later.
12 Demand Supply Equilibrium Income and Substitution effects 5/ 17 The demand curve is downward sloping because of the income and substitution effect. Substitution effect: when the price of a good rises, people may buy substitute goods instead. Income effect: When the price of a good rises, the real purchasing power of your income decreases. When the real value of your income decreases, you buy less of everything. Close to correct. More on the income effect later.
13 Demand Supply Equilibrium Income and Substitution effects 5/ 17 The demand curve is downward sloping because of the income and substitution effect. Substitution effect: when the price of a good rises, people may buy substitute goods instead. Income effect: When the price of a good rises, the real purchasing power of your income decreases. When the real value of your income decreases, you buy less of everything. Close to correct. More on the income effect later.
14 Demand Supply Equilibrium Income and Substitution effects 5/ 17 The demand curve is downward sloping because of the income and substitution effect. Substitution effect: when the price of a good rises, people may buy substitute goods instead. Income effect: When the price of a good rises, the real purchasing power of your income decreases. When the real value of your income decreases, you buy less of everything. Close to correct. More on the income effect later.
15 Demand Supply Equilibrium Supply 6/ 17 The quantity supplied of a good or service is the amount producers are willing and able to produce and sell in a given time period at a given price. Law of supply: All other things remaining the same, the higher (lower) is the price of a good, the higher (lower) is the quantity supplied. Supply schedule or curve: a table or graph of different quantities supplied for different prices. According to the law of supply, the demand curve should be sloping. Change in quantity supplied: when there is a change in price causing a movement from one point on the supply curve to another point.
16 Demand Supply Equilibrium Supply 6/ 17 The quantity supplied of a good or service is the amount producers are willing and able to produce and sell in a given time period at a given price. Law of supply: All other things remaining the same, the higher (lower) is the price of a good, the higher (lower) is the quantity supplied. Supply schedule or curve: a table or graph of different quantities supplied for different prices. According to the law of supply, the demand curve should be sloping. Change in quantity supplied: when there is a change in price causing a movement from one point on the supply curve to another point.
17 Demand Supply Equilibrium Supply 6/ 17 The quantity supplied of a good or service is the amount producers are willing and able to produce and sell in a given time period at a given price. Law of supply: All other things remaining the same, the higher (lower) is the price of a good, the higher (lower) is the quantity supplied. Supply schedule or curve: a table or graph of different quantities supplied for different prices. According to the law of supply, the demand curve should be sloping. Change in quantity supplied: when there is a change in price causing a movement from one point on the supply curve to another point.
18 Demand Supply Equilibrium Supply 6/ 17 The quantity supplied of a good or service is the amount producers are willing and able to produce and sell in a given time period at a given price. Law of supply: All other things remaining the same, the higher (lower) is the price of a good, the higher (lower) is the quantity supplied. Supply schedule or curve: a table or graph of different quantities supplied for different prices. According to the law of supply, the demand curve should be sloping. Change in quantity supplied: when there is a change in price causing a movement from one point on the supply curve to another point.
19 Demand Supply Equilibrium Supply 6/ 17 The quantity supplied of a good or service is the amount producers are willing and able to produce and sell in a given time period at a given price. Law of supply: All other things remaining the same, the higher (lower) is the price of a good, the higher (lower) is the quantity supplied. Supply schedule or curve: a table or graph of different quantities supplied for different prices. According to the law of supply, the demand curve should be sloping. Change in quantity supplied: when there is a change in price causing a movement from one point on the supply curve to another point.
20 Demand Supply Equilibrium Supply 7/ 17 Supply Schedule Supply Curve Point Price Q D A B C D E 2.5 6
21 Demand Supply Equilibrium Equilibrium 8/ 17 The equilibrium price is the price where the quantity supplied is equal to the quantity demanded. The equilibrium quantity is the corresponding quantity. This is the price and quantity that will prevail in an unregulated market.
22 Demand Supply Equilibrium Equilibrium 8/ 17 The equilibrium price is the price where the quantity supplied is equal to the quantity demanded. The equilibrium quantity is the corresponding quantity. This is the price and quantity that will prevail in an unregulated market.
23 Demand Supply Equilibrium Equilibrium 8/ 17 The equilibrium price is the price where the quantity supplied is equal to the quantity demanded. The equilibrium quantity is the corresponding quantity. This is the price and quantity that will prevail in an unregulated market.
24 Demand Supply Equilibrium Equilibrium 9/ 17 Surplus: away from equilibrium, when Q S > Q D Shortage: away from equilibrium, when Q D > Q S.
25 Demand Supply Equilibrium Equilibrium 9/ 17 Surplus: away from equilibrium, when Q S > Q D Shortage: away from equilibrium, when Q D > Q S.
26 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
27 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
28 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
29 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
30 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
31 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
32 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
33 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
34 Determinants of demand 10/ 17 When something besides the price of the good effects demand, we say there is a change or shift in demand. Something that increases (decreases) demand shifts the demand curve to the right (left). Determinants of demand: Changes in prices of related goods. Changes in income. Changes in expected future income. of future price. Changes in population. Changes in tastes and preferences.
35 Shifts in demand 11/ 17
36 Changes in price of related goods 12/ 17 Substitutes: a substitute good is a good that can be consumed instead of another good. Examples: beef and pork, wine and beer, hamburgers and hot dogs. If the price of a substitute for beer increases, this will the demand for beer. Complements: a complement good is a good that is often consumed together with another good. Examples: Peanut butter and jelly, hamburgers and buns. If the price of a complement for buns increases, this will the demand for buns.
37 Changes in price of related goods 12/ 17 Substitutes: a substitute good is a good that can be consumed instead of another good. Examples: beef and pork, wine and beer, hamburgers and hot dogs. If the price of a substitute for beer increases, this will the demand for beer. Complements: a complement good is a good that is often consumed together with another good. Examples: Peanut butter and jelly, hamburgers and buns. If the price of a complement for buns increases, this will the demand for buns.
38 Changes in price of related goods 12/ 17 Substitutes: a substitute good is a good that can be consumed instead of another good. Examples: beef and pork, wine and beer, hamburgers and hot dogs. If the price of a substitute for beer increases, this will the demand for beer. Complements: a complement good is a good that is often consumed together with another good. Examples: Peanut butter and jelly, hamburgers and buns. If the price of a complement for buns increases, this will the demand for buns.
39 Changes in price of related goods 12/ 17 Substitutes: a substitute good is a good that can be consumed instead of another good. Examples: beef and pork, wine and beer, hamburgers and hot dogs. If the price of a substitute for beer increases, this will the demand for beer. Complements: a complement good is a good that is often consumed together with another good. Examples: Peanut butter and jelly, hamburgers and buns. If the price of a complement for buns increases, this will the demand for buns.
40 Changes in price of related goods 12/ 17 Substitutes: a substitute good is a good that can be consumed instead of another good. Examples: beef and pork, wine and beer, hamburgers and hot dogs. If the price of a substitute for beer increases, this will the demand for beer. Complements: a complement good is a good that is often consumed together with another good. Examples: Peanut butter and jelly, hamburgers and buns. If the price of a complement for buns increases, this will the demand for buns.
41 Changes in price of related goods 12/ 17 Substitutes: a substitute good is a good that can be consumed instead of another good. Examples: beef and pork, wine and beer, hamburgers and hot dogs. If the price of a substitute for beer increases, this will the demand for beer. Complements: a complement good is a good that is often consumed together with another good. Examples: Peanut butter and jelly, hamburgers and buns. If the price of a complement for buns increases, this will the demand for buns.
42 Changes in income 13/ 17 Normal good: a good whose demand increases when consumers incomes increase. Inferior good: a good whose demand decreases when consumers incomes increase. Can you think of examples of an inferior good?
43 Changes in income 13/ 17 Normal good: a good whose demand increases when consumers incomes increase. Inferior good: a good whose demand decreases when consumers incomes increase. Can you think of examples of an inferior good?
44 Changes in income 13/ 17 Normal good: a good whose demand increases when consumers incomes increase. Inferior good: a good whose demand decreases when consumers incomes increase. Can you think of examples of an inferior good?
45 14/ 17 If people expect the price of the good to increase, this will today s demand for the good. If a good is a normal good and people expect to have higher incomes in the future, this will the demand for the good. If a good is an inferior good and people expect to have higher incomes in the future, this will the demand for the good.
46 14/ 17 If people expect the price of the good to increase, this will today s demand for the good. If a good is a normal good and people expect to have higher incomes in the future, this will the demand for the good. If a good is an inferior good and people expect to have higher incomes in the future, this will the demand for the good.
47 14/ 17 If people expect the price of the good to increase, this will today s demand for the good. If a good is a normal good and people expect to have higher incomes in the future, this will the demand for the good. If a good is an inferior good and people expect to have higher incomes in the future, this will the demand for the good.
48 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
49 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
50 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
51 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
52 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
53 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
54 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
55 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
56 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
57 15/ 17 When something besides the price of the good effects supply, we say there is a change or shift in supply. Something that increases (decreases) demand shifts the supply curve to the right (left). : Changes in the prices of factors of production. When costs increase this supply. Changes in the price of related goods. Expected future prices. If the price is expected to be higher in the future, producers will supply today. Number of suppliers. Changes in technology.
58 Shifts in supply 16/ 17
59 Next Time... 17/ 17 Supply and demand in class exerciese. Apply our knowledge of supply and demand to look at behavior of exchange rates, currencies, imports, and exports (Module 42).
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