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The first person to get up and do five star jumps gets unlimited Mars Bars for the rest of the lesson. You will get one to eat every 5 minutes.

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Presentation on theme: "The first person to get up and do five star jumps gets unlimited Mars Bars for the rest of the lesson. You will get one to eat every 5 minutes."— Presentation transcript:

1 The first person to get up and do five star jumps gets unlimited Mars Bars for the rest of the lesson. You will get one to eat every 5 minutes.

2

3 1.1 Competitive Markets Demand

4 What is a market? A market is a meeting of buyers and sellers
Ask the students to give examples

5 The Drink Auction I am willing to sell an ice-cold drink. How much are you willing to pay?

6 Demand defined Demand Demand is the different quantities of goods that consumers are willing and able to buy at different prices.

7 Law of Demand Inverse Relationship

8 …Quantity Demanded Rises As Price Rises… …Quantity Demanded Falls
Law of demand As Price Falls… …Quantity Demanded Rises As Price Rises… …Quantity Demanded Falls Quantity Demanded Price

9 We will define and explain each…
Law of Demand Three reasons The Substitution effect The Income effect The Law of Diminishing Marginal Utility We will define and explain each…

10 1. The Substitution Effect
Law of Demand 1. The Substitution Effect

11 Law of Demand 2. The Income Effect If the price goes down for a product, the purchasing power increases for consumers -allowing them to purchase more.

12 3. Law of Diminishing Marginal Utility
Law of Demand? 3. Law of Diminishing Marginal Utility Utility = Satisfaction We buy goods because we get utility from them The law of diminishing marginal utility states that as you consume more units of any good, the additional satisfaction from each additional unit will eventually start to decrease In other words, the more you buy of ANY GOOD the less satisfaction you get from each new unit.

13 What does this have to do with the Law of Demand?
How does this effect the pricing of businesses?

14 Can you see the Law of Diminishing Marginal Utility in Disneyland’s pricing strategy?
Change N/A $54 $33 $15 $10 $5

15 Let’s draw ours from earlier… y-axis is always Price (P)
The Demand Curve Let’s draw ours from earlier… y-axis is always Price (P) x-axis is always Quantity (Q)

16 Demand Schedule Price of Cereal $5 10 $4 20 $3 30 $2 50 $1 80 Demand o
Graphing demand Demand Schedule Price of Cereal $5 4 3 2 1 Price Quantity Demanded $5 10 $4 20 $3 30 $2 50 $1 80 Demand o Q Quantity of Cereal

17 How do we get market Demand?
Cam’ron Quayara Other Individuals Market Price Q Demd $5 1 $4 2 $3 3 $2 5 $1 7 Price Q Demd $5 $4 1 $3 2 $2 3 $1 5 Price Q Demd $5 9 $4 17 $3 25 $2 42 $1 68 Price Q Demd $5 10 $4 20 $3 30 $2 50 $1 80 P P P P $3 $3 $3 $3 D D D D Q Q Q Q 3 2 25 30

18 This is a change in demand, not a change in quantity demanded
Shifts in Demand CHANGES IN DEMAND Ceteris paribus-“all other things held constant.” If the price goes down there will be an increase in quantity demanded. If the price goes up, there will be a decrease in quantity demanded. An increase in demand means that at each price, more people are willing and able to buy. This is a change in demand, not a change in quantity demanded Changes in price DO NOT shift the curve! Draw these situations on an adjacent board.

19 What if cereal makes you smarter?
Shift in Demand Demand Schedule What if cereal makes you smarter? Price of Cereal $5 4 3 2 1 Price Quantity Demanded $5 10 $4 20 $3 30 $2 50 $1 80 Demand o Q Quantity of Cereal

20 More people want cereal at each price level
Shift in Demand Demand Schedule What if cereal causes baldness? Price of Cereal Increase in Demand More people want cereal at each price level $5 4 3 2 1 Price Quantity Demanded $5 10 $4 20 $3 30 $2 50 $1 80 30 40 50 D1 70 Demand 100 o Q Quantity of Cereal 20

21 Prices didn’t change but people want LESS cereal
Shift in Demand Demand Schedule Price of Cereal $5 4 3 2 1 Decrease in Demand Prices didn’t change but people want LESS cereal Price Quantity Demanded $5 10 $4 20 $3 30 $2 50 $1 80 5 20 30 D2 Demand 60 o Q Quantity of Cereal

22 What if the price of MILK goes up?
Shift in Demand Demand Schedule What if the price of MILK goes up? Price of Cereal $5 4 3 2 1 Price Quantity Demanded $5 10 $4 20 $3 30 $2 50 $1 80 Demand o Q Quantity of Cereal 22

23 What Causes a Shift in Demand?
5 Factors (Shifters) of Demand: Tastes and Preferences Price of Related Goods Income Future Expectations Demographics Changes in PRICE don’t shift the curve. It only causes movement along the curve.

24 Factors of Demand – Tastes and Preferences
The demand curve can be affected by a change in the tastes and preferences of consumers. Advertising 2. Trends

25 Factors of Demand – Tastes and Preferences
3. New information

26 Factors of Demand – Prices of related goods
The demand curve for one good can be affected by a change in the price of ANOTHER related good. Substitutes are goods used in place of one another. If price of Pepsi falls, demand for Coke will…

27 Substitutes 27

28 Factors of Demand – Prices of related goods
2. Complements are two goods that are bought and used together. If price of skis falls, demand for ski boots will...

29 Factors of Demand - Income
The incomes of consumers change the demand, but how depends on the type of good. Normal Goods As income increases, … As income falls, … E.g luxury cars, takeaway coffee, jewellery Spam-Inferior Yachts- Normal Off Brand Cereal-Inferior McDonald’s-Inferior Toilet Paper- Probably no connection to income (The point-some products are very reliant on income and others are not)

30 Factors of Demand - Income
2. Inferior Goods E.g. low-grade mince meat, used cars

31 Factors of Demand – Future expectations
Future expectations of price can shift demand. Lower expected future price = decrease in demand (shift to the left) Higher expected future price = increase in demand (shift to the right)

32 Factors of Demand – Demographics
Changes in market size will affect demand. Changes in demographics will affect demand. e.g. in an ageing suburb, demand for childcare will decrease

33 Change in Quantity demanded vs. Change in Demand
There are two ways to increase quantity from 10 to 20 Price of Cereal P A to B is a change in quantity demanded (due to a change in price) A to C is a change in demand (shift in the curve) A C $3 $2 B D2 D1 o Q Cereal Quantity of Cereal

34 Practice First, identify the determinant (shifter) then decide if demand will increase or decrease Shifter Increase or Decrease Left or Right 1 2 3 4 5 6 7 8 Number of consumers, increase. Income, decrease. Substitutes, decrease. Price doesn’t shift curve, no change. Tastes and preferences, decrease. Expectations, increase. Complements, decrease.

35 Hamburgers (a normal good)
Practice First identify the determinant (Shifter). Then decide if demand will increase or decrease Hamburgers (a normal good) Population boom Incomes fall due to recession Price for burritos falls to $1 Price increases to $5 for hamburgers New health craze- “No ground beef” Hamburger restaurants announce that they will significantly increase prices next month Government heavily taxes shakes and fries, causes their prices to quadruple. Restaurants lower price of burgers to $.50 Draw the demand diagrams 35

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