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DEMAND, SUPPLY, AND PRICE
C H A P T E R 3 - E C O N O M I C S
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DEMAND
• Demand is the desire to purchase a particular item at a specified price and time, accompanied by the ability and willingness to pay
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SOMETIMES YOU HAVE TO GET IN THERE…
… and just BLOW IT UP!!!
IN LIFE… AND ECONOMICS…
Did You Just Say Blow It Up Coach Newman?!?!?!?
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DEMAND
• Demand is the desire to purchase a particular item at a specified price and time, accompanied by the ability and willingness to pay
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DEMAND
• Demand is the desire to purchase a particular item at a specified price and time, accompanied by the ability and willingness to pay
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DEMAND
• Demand is the desire to purchase a particular item at a specified price and time, accompanied by the ability and willingness to pay
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DEMAND ( BLOWN UP!!!) • Demand is:• the desire to purchase a particular item…
•…at a specified price
•… and time,
•…accompanied by the ability…
•…And willingness to pay...
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THANK YOU CLAY MATTHEWS!!!
OH GOD!!! WE’VE ANGERED HIM!!!
Your welcome!
Ok… um look… we need to get our Demand notes done… Please… go…
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I THINK HE’S GONE…
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OK WELL, LETS GET DEMAND SCHEDULE IN QUICK!!!• Demand varies with the price of an item
• For an example what would the demand of pizza be like at certain prices?
At a Price of Number of Slices students would buy
$2.75 1
$2.50 2
$2.25 6
$2.00 12
$1.75 23
$1.50 45The Chart Above is Our Demand Schedule
• This is where we insert demand data into a table and we can see what people would buy at various price levels
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DEMAND CURVE
Oh God… Clay Matthews is stalking us like a lion...
Ok well…
With the demand schedule shown in a table, now we can plot a demand curve…
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Pri
ce o
f Slic
es
$
Number of Slices Sold
DEMAND CURVE
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STEP
1
PLOT
THE P
OINTS
OF
THE D
EMAND
SCHEDULE
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At a Price of Number of Slices students would buy
$2.75 1$2.50 2$2.25 6$2.00 12$1.75 23$1.50 45
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
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STEP
2
DRAW T
HE LINES
CONNECTING YO
UR
POIN
TS
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
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STEP
3
PUT
IT ALL
TOGETH
ER!!!
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Pri
ce o
f Slic
es
$
Number of Slices Sold
DEMAND CURVE
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
NO CLAY MATTHEWS… NOOOOOOOOOO!!!
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LAW OF DEMAND
• The Law of Demand Tells us that buyers will buy more of an item at a lower price and less at a higher price
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REASONS WHY THE LAW OF DEMAND WORKSThe reason for why the law of demand
works is because at a lower price:
1.People can afford to buy the product
2.People tend to buy larger quantities of a product
3.People tend to substitute the product for similar items that are either more expensive or less desirable
EXAMPLES:
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BUTTTTTT… AS PRICE GOES UP
Similarly , the law of demand changes as price goes up:
1.Fewer people can afford to buy the product
2.Buyers tend to purchase smaller quantities
3.People tend to substitute products for that product
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
The Law of Demand works here because as the price went up, people bought less pizza slices because they didn’t want to pay the price for those pizza slices, they bought a smaller amount of pizza slices, or found another lunch item to buy instead of pizza
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PRINCIPLE OF DIMINISHING MARGINAL UTILITIES
• Economists have devised the concept of marginal utility to help explain the spending patterns of consumers
• Marginal utility is the degree of satisfaction or usefulness a consumer gets for each additional purchase of good or service ( Marginal meaning 1)
• The Principle of Diminishing Marginal Utility is a phenomenon where each additional purchase of a product or service by a given consumer will be less satisfying than the previous product
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PRINCIPLE OF DIMINISHING MARGINAL UTILITY CONTINUED…
• This applies to almost any product, after you’ve had one of something, buying another will have less utility
• What if you bought 4 or 5 of these?
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ELASTICITY OF DEMAND
Some products, regardless of price, will ALWAYS BE DEMANDED
Products that are always in high demand: “milk ,gasoline, oil, etc”, are known to have:
INELASTIC DEMAND… this means that even when price rises or falls, the demand for these products stays them same, but with a lower price comes HAPPIER CUSTOMERS!!!
ELASTIC DEMAND – is when there is a rise or drop in price, the demand for that product can go from unaffordable or not worth buying to buying many just because you can with the cheaper price
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REASONS FOR A PRODUCT TO BE ELASTIC?
1.The Item is considered a luxuryLuxuries are goods or services that consumers regard as something they can live without. If the price is too high, people will live without it.
2.The price represents a large portion of the family income and therefore alternatives are foundBuying a car, or home (the biggest investment in most families’ lives), could be diminished if prices go up.
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REASONS FOR A PRODUCT TO BE ELASTIC?
3. Other products can easily be substituted for itSome products like steak or food can be easily subbed out. Others like steel or gasoline cannot without expensive alternatives.
4. The items are durable or quality Furniture, appliances, and automobiles are relatively long lasting. Many consumers will buy more/ replace existing ones if the price is right. If not, they will make due with the ones they already have
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SUPPLY
Economists use the word “supply” to describe the amount of goods and services offered for sale at a particular price
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SUPPLY SCHEDULE• Supply varies with the price of an item
• For an example why would the supply of pizza increase at higher prices?
At a Price of Number of Slices sellers make
$2.75 55
$2.50 45
$2.25 33
$2.00 21
$1.75 14
$1.50 2
The Chart Above is Our Supply Schedule-This is where we insert supplied data into a table and we can see what suppliers would sell at various price levels
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
SUPPLY CURVE
Pri
ce o
f Slic
es
$
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LAW OF SUPPLY• The Law of Supply States:
•The Quantity of a good or service supplied varies directly with price.•That is, the number of units something offered for sale increases as the price increases, and decreases as the price decreases…•This makes Nintendo go from a playing card company to a video game giant•This makes Apple go from a personal computer giant to the worlds largest seller of music…
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
SUPPLY CURVE
Pri
ce o
f Slic
es
$
The Law of Supply works here because as the price went up, suppliers want to make more pizza slices because they believe the risk of making more slices with worth the sales they can make off these higher priced slices. With this said, perhaps other sellers would come into the pizza market and also sell pizza because of their own profit motive.
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LAW OF SUPPLY
• The Law of Supply tells us that sellers will sell more of an item at a higher price and less at a lower price
• A key reason is a higher price could bring in more sellers to sell that good or service
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ELASTICITY OF SUPPLY
ELASTIC SUPPLY– If a change in price causes a larger percentage change in supply, supply is said to be elastic.
• For example: Most manufactured goods are subject to larger supply elasticity than natural goods. Why?•Employees can work overtime to make more of a manufactured good
VERSUS•Dairy Farmers could not expect such cooperation from their herds
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YES!!! WORK!!! WOOOOOOOOOOOOOOOORK!!!
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NO!!! THERE IS NO MORE AFTER A WHILE!!!
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EXAMPLES OF ELASTICITY OF SUPPLY
Example of ELASTIC SUPPLY- Any manufactured good due to the fact that producers can work more hours, use better technologies, new methods of production, faster transportation systems, communications, etc.
Examples: iPods, cosmetics, skateboards, action figures, desks, concrete mix, hammers, metal detectors, boots, hockey sticks, books, etc etc etc etc etc etc etc
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EXAMPLES OF ELASTICITY OF SUPPLY
Example of INELASTIC SUPPLY- Any natural product due to the limited amount that the earth has and the time it takes to grow or renew that product
(if that’s possible)Examples: Oil
(OBVVVVVVVVVVVVVVVVVVVVVVVI), milk, lumber, and spring water
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PRICE
The point in which goods and services are exchanged between supply and demand
As price increases, the number of items offered for sale (supply) increases….
BUTAs the price increases the quantity that buyers are willing to buy (demand) decreases…
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
SUPPLY CURVE
Pri
ce o
f Slic
es
$
As price increases, the number of items offered for sale (supply) increases….
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
DEMAND CURVE
Pri
ce o
f Slic
es
$
As the price increases he quantity that buyers are willing to buy (demand) decreases…
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PRICE IS WHERE THE LINES INTERSECT
Price is found where our Supply Curves and Demand Curves Meet…
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$3.00
$2.75
$2.50
$2.25
$2.00
$1.75
$1.50
$1.25
0 10 15 20 30 40 50
Number of Slices Sold
PRICEPri
ce o
f Slic
es
$
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WHAT IFS…
When looking at “Price”, “ceterus paribus” must be used to discuss the theories and terms associated with price…
• This means NO WHAT IFS… right not at least…
• We can have no “what if’s” if we talk about “Perfect Competition”
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PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
1.There are many buyers and sellers acting independently. No single buyer or seller is big enough to influence the market price…
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PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
2. Competing products are practically identical, so that buyers and sellers of a given product are not affected by variations in quality or design.
![Page 52: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/52.jpg)
PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
3. All buyers and sellers have full knowledge of prices being quoted all over the market
![Page 53: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/53.jpg)
PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
4. Buyers and sellers can enter and leave the market at will. That is, buyers are free to buy or not to buy, sellers are free to sell or not to sell
![Page 54: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/54.jpg)
PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
1. There are many buyers and sellers acting independently. No single buyer or seller is big enough to influence the market price…
2. Competing products are practically identical, so that buyers and sellers of a given product are not affected by variations in quality or design.
3. All buyers and sellers have full knowledge of prices being quoted all over the market
4. Buyers and sellers can enter and leave the market at will. That is, buyers are free to buy or not to buy, sellers are free to sell or not to sell
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EQUILIBRIUM PRICE/ MARKET PRICE
The maximum number items demanded, meets the maximum items supplied, in “perfect competition”
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EQUILIBRIUM PRICE
With our chart for pizza, the supply and demand curves show us that the “Market Price” or “Equilibrium Price” is selling 17 slices for around $1.85.
However, will this price be offered? Will this market price always be the same? What might change this price with regards to supply or demand?
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THEREFORE… CAN EQUILIBRIUM/ MARKET PRICE EXIST?
NO!!!
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SO… LETS MESS UP “PERFECT COMPETITION”!!!
OH HELL YEAH COACH NEWMAN!!!
LETS DO IT!!!
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PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
1.There are many buyers and sellers acting independently. No single buyer or seller is big enough to influence the market price…
HOW IS THIS COUNTERED IN THE REAL WORLD?
![Page 60: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/60.jpg)
PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
2. Competing products are practically identical, so that buyers and sellers of a given product are not affected by variations in quality or design.
HOW IS THIS COUNTERED IN THE REAL WORLD?
![Page 61: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/61.jpg)
PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
3. All buyers and sellers have full knowledge of prices being quoted all over the market
HOW IS THIS COUNTERED IN THE REAL WORLD?
![Page 62: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/62.jpg)
PERFECT COMPETITION
Perfect Competition, which cannot exist in the real world, is the best way to talk about supply, demand, and market price. Under perfect competition, the following conditions exist
4. Buyers and sellers can enter and leave the market at will. That is, buyers are free to buy or not to buy, sellers are free to sell or not to sell
HOW IS THIS COUNTERED IN THE REAL WORLD?
![Page 63: DEMAND, SUPPLY, AND PRICE CHAPTER 3- ECONOMICS. DEMAND Demand is the desire to purchase a particular item at a specified price and time, accompanied by](https://reader035.vdocument.in/reader035/viewer/2022062516/56649e2a5503460f94b189de/html5/thumbnails/63.jpg)
SO PERFECT COMPETITION CANNOT EXIST, AND PRICE IS CONSTANTLY FLOWING BACK AND FORTH BETWEEN BUYERS AND SELLERS THROUGH THE BUSINESS DAY, WEEK, MONTH, YEAR, DECADE, CENTURY, ETC…
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PRICE CEILING AND PRICE FLOOR
Sometimes governments attempt to control the market by imposing ceilings and floors on prices
A price ceiling sets a maximum price that sellers may charge for their productsPrice ceilings are set up to make sure people can afford items like bread/ food for survival
A price floor guarantees sellers a minimum price for their productsPrice floors have been set up by the US government to help farmers by guaranteeing a minimum price on one or more of their crops.