the price system and the micro economy Flashcards

demand and supply curves, price elasticity, income elasticity, and cross elasticity of demand, price elasticity of supply, the interaction of demand and supply, consumer and producer surplus (70 cards)

1
Q

What is Effective Demand?

A

The quantity of a good or service an individual is willing and able to purchase over a range of prices over a period of time.

Effective demand must be backed up with the ability to pay for it.

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2
Q

How does Effective Demand differ from Desire for a Product?

A

Effective Demand requires the ability to pay, whereas Desire does not.

For example, wanting a Ferrari without the financial means does not constitute effective demand.

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3
Q

What does the Law of Demand state?

A

For most goods and services, the quantity demanded is inversely proportional to its price.

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4
Q

What is a Demand Curve?

A

A curve showing the relationship between the quantity of products individuals are willing and able to buy over a range of prices over a period of time.

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5
Q

What does Ceteris Paribus mean in demand analysis?

A

All other factors affecting demand are held constant.

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6
Q

What is Market Demand?

A

The total demand for a particular product in the market.

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7
Q

How is Market Demand calculated?

A

By adding together the quantity demanded of each individual at any given price.

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8
Q

What is Supply?

A

The quantity of a good a producer is willing and able to offer for sale over a range of prices, over a given period of time.

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9
Q

What does the Law of Supply state?

A

For most goods and services, the quantity supplied is directly proportional to its price.

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10
Q

What happens to Quantity Supplied when Price Rises?

A

Quantity Supplied Rises.

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11
Q

What is a Supply Curve?

A

A curve showing the relationship between the quantity of a product producers are willing and able to offer for sale over a range of prices, over a period of time.

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12
Q

What is the difference between a Movement Along the Curve and a Shift in the Curve?

A

Movement Along Curve refers to contractions or extensions, while Shift in Curve refers to changes in the whole curve due to changes in determinants.

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13
Q

What are the Determinants of Demand?

A
  • Income
  • Price of Other Goods
  • Tastes & Preferences
  • Speculation
  • Size, Age, Gender or Population
  • Distribution of Income
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14
Q

What is a Normal Good?

A

A good whose demand rises as income rises, and falls as income falls.

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15
Q

What is an Inferior Good?

A

A good whose demand falls as income rises, and rises as income falls.

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16
Q

What is the relationship between Substitutes?

A

Goods that are alternatives to one another; they can replace each other.

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17
Q

What are Complements?

A

Goods that are consumed together.

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18
Q

How does Advertising influence demand?

A

It can affect individuals’ tastes and preferences, thus influencing the demand for a product.

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19
Q

What is Speculation in economic terms?

A

Buying products hoping their price will rise, allowing profit when reselling.

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20
Q

What are the Determinants of Supply?

A
  • Costs of Production
  • Availability of Resources
  • Climate
  • Technology
  • Government Regulation
  • Taxes & Subsidies
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21
Q

What happens to Supply when Costs of Production rise?

A

The Supply curve should fall.

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22
Q

What effect does Government Regulation have on Supply?

A

High regulation typically leads to a fall in the supply curve due to increased production costs.

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23
Q

What is Price Elasticity of Demand?

A

It measures the responsiveness of a change in demand to a change in price.

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24
Q

What does a PED greater than 1 indicate?

A

Demand is price elastic, meaning the change in price leads to a bigger change in demand.

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25
What is the formula for Price Elasticity of Demand?
PED = (%Change in Quantity Demanded) / (%Change in Price)
26
What defines a Perfectly Inelastic Demand?
Demand does not change when price changes (PED = 0).
27
What factors influence Price Elasticity of Demand?
* Necessity * Substitute Availability * Addictiveness * Proportion of Income * Durability * Peak and Off-Peak Demand
28
What is Income Elasticity of Demand?
It measures the responsiveness of a change in demand to a change in income.
29
What does a YED value less than 0 indicate?
The good is an Inferior Good; demand decreases as income increases.
30
What does Cross Elasticity of Demand measure?
The responsiveness of a change in demand of one good to a change in price of another good.
31
What does a XED value greater than 0 indicate?
The goods are Substitutes; if the price of one rises, the demand for the other rises.
32
What does XED stand for?
Cross Elasticity of Demand ## Footnote Measures the responsiveness of the quantity demanded of one good to a change in the price of another good.
33
What is the formula for calculating XED?
XED = (%change in X’s Quantity Demanded) / (%change in Y’s Price)
34
What does an XED value of less than 0 indicate?
Complements ## Footnote If Good Y becomes more expensive, the quantity demanded of both goods falls.
35
What does an XED value greater than 0 indicate?
Substitutes ## Footnote If Good Y becomes more expensive, the quantity demanded of Good X rises.
36
What does an XED value of 0 indicate?
No Relationship ## Footnote Goods have no influence on each other's demand.
37
What does a greater magnitude of XED indicate?
Stronger relationship between goods
38
What does a smaller magnitude of XED indicate?
Weaker relationship between goods
39
What is the formula for Price Elasticity of Demand (PED)?
PED = (%ΔQd) / (%ΔPrice)
40
What is the purpose of calculating PED?
Optimising prices for revenue and taxation
41
What is the formula for Price Elasticity of Supply (PES)?
PES = (%change in Quantity Supplied) / (%change in Price)
42
What does PES greater than 1 indicate?
Elastic Supply ## Footnote Firms can increase supply quickly at little cost.
43
What does PES less than 1 indicate?
Inelastic Supply ## Footnote Supply will be expensive for firms, hence cannot variate quickly.
44
What does PES equal to 0 indicate?
Perfectly Inelastic Supply ## Footnote Supply is fixed; any change in demand won’t change the current supply.
45
What does PES equal to infinity indicate?
Perfectly Elastic Supply ## Footnote Any quantity demanded can be met without changing the price.
46
In terms of PES, what shape represents perfectly elastic supply?
Horizontal Line
47
In terms of PES, what shape represents perfectly inelastic supply?
Vertical Line
48
What influences the Price Elasticity of Supply?
Factors such as Time Scale, Spare Capacity, Level of Stocks, Flexibility of Factors of Production, and Market Barriers to Entry
49
What is market equilibrium?
When supply meets demand
50
What occurs during market disequilibrium?
Surplus or Shortage
51
What is a surplus?
Occurs when supply exceeds demand
52
What is a shortage?
Occurs when demand exceeds supply
53
What is joint demand?
When goods are complements
54
What is alternative demand?
When goods are substitutes
55
What is derived demand?
When the demand for a good produces a corresponding demand for another related good
56
What is joint supply?
When increasing the supply of one good influences the supply of another good
57
What are the three main functions of price in the market?
Rationing, Signalling, and Incentivising
58
What does the rationing function of price imply?
Price increases when resources are scarce, discouraging demand
59
What does the signalling function of price indicate?
Price variations indicate where resources are needed in the market
60
What does the incentivising function of price encourage?
Encourages firms to increase output based on consumer demand
61
What is consumer surplus?
The difference between the price the consumer is willing to pay and the price they actually pay
62
Where is consumer surplus located in a graph?
Area above market price and below the demand curve
63
What factors increase consumer surplus?
* Rise in Demand * Rise in Supply
64
What factors decrease consumer surplus?
* Fall in Demand * Fall in Supply
65
What is producer surplus?
The difference between the price the producer is willing to charge and the price they actually charge
66
Where is producer surplus located in a graph?
Area below the market price and above the supply curve
67
What factors increase producer surplus?
* Rise in Supply * Rise in Demand
68
What factors decrease producer surplus?
* Fall in Supply * Fall in Demand
69
What is economic welfare?
The total benefit society receives from an economic transaction
70
How is economic welfare calculated?
Area of producer and consumer surplus added together