Price system (Demand & Supply) 2 Flashcards

2) price system and the microeconomy

1
Q

Define price mechanism

A

1) means of allocating resources in a market economy
2) a Self-regulating (no gov help) communication channel between buyers and sellers.

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2
Q

Define Demand

A

quantity of product consumers are willing to buy at different prices per period of time. (c.p.)

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3
Q

What is notional demand?

A

where buyers may want to buy product which not always is backed-up by an ability to pay.

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4
Q

What is effective demand?

A

Demand supported by an ability to pay.

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5
Q

Factors that affect demand

A

1) Income
2) fashion / Tastes / Attitudes
3) Price & availability of related products
4) Price of product in question

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6
Q

Define substitutes

A

an alternative good

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7
Q

Define Complements

A

a good consumed with another

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8
Q

What is joint demand?

A

when two goods are consumed together

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9
Q

What good’s demand has a positive relationship with income?

A

Normal Good

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10
Q

What good’s demand has a negative relationship with income?

A

Inferior good

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11
Q

Define supply

A

the quantity of a product that producers are willing to sell at different prices within a time period (c.p.)

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12
Q

Factors affecting supply:

A

1) Cost
2) Size & Nature of Industry
3) Change in price of other products
4) Government policy

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13
Q

What does a shift to the RIGHT in the demand curve mean?

A

1) an increase in income
2) an increase in the prices of substitutes
3) a decrease in the price of complements
4) a favourable change in fashion, taste and attitudes.

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14
Q

What does a shift to the LEFT in the demand curve mean?

A

1) a decrease in income
2) a decrease in the price of substitutes
3) an increase in the price of complements
4) an unfavourable change in tastes, fashion and attitudes

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15
Q

What does a shift to the RIGHT in the supply curve mean?

A

1) a decrease in costs of production
2) growth in the size of the industry
3) a decrease in the price of competitor’s goods
4) decrease in an indirect tax OR increase in a subsidy

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16
Q

What does a shift to the LEFT in the supply curve mean?

A

1) an increase in costs of production
2) decline in the size of industry
3) an increase in the price of competitor’s goods
4) increase in an indirect tax OR fall in subsidy

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17
Q

what does extension of demand/supply curve mean?

A

increase in quantity demanded/supplied

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18
Q

what does contraction of demand/supply curve mean?

A

decrease in quantity demanded/supplied

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19
Q

What is the supply chain?

A

all stages of a product’s progress from raw materials, production and distribution until it reaches the consumer

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20
Q

What is the demand curve (D)?

A

a line plotted on a graph that represents the relationship between the quantity demanded + price of the product
- Based on overall market demand

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21
Q

What is market demand?

A

the total amount demanded by consumers

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22
Q

What is demand schedule?

A

data from which a demand curve is drawn on a graph

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23
Q

What does the market demand curve show?

A
  • there’s an inverse or neg relationship between price + quantity demanded. Means = when prices goes up, decrease in quantity demanded, and when prices go down, increase in quantity demanded.
  • changes in price causes a change in quantity demanded. Shown by movements up + down curve, its assumed all other factors affecting demand remain unchanged.
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24
Q

What does a movement up or down (along) the demand curve mean?

A

It shows how quantity demanded responds to a change in price.

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25
What are the main features of a demand curve?
- Linear relationship - when D curve is drawn as a straight line. But price and quantity demanded can be related in non-linear way - Continuous relationship - can look at diagram and find out what price consumers would be willing and able to pay. - A time-based relationship - usually weekly - Other things equal, ceteris paribus Demand curves allow the estimation of how much consumers may spend on a product, and how much rev firms receive from selling a quantity of this product
26
What is the supply curve?
a line plotted on a graph that represents the relationship between quantity supplied + price of product
27
What is a supply schedule?
data from which a supply curve is drawn on a graph
28
What does the supply curve show?
- A positive / direct relationship between price + quantity supplied. Means that 1) when price rises, increase in quantity supplied + 2) when price lowers, decrease in quantity supplied - Changes in price cause a change in the quantity supplied. Movements shown by up + down the supply curve. Assumed that all other factors affecting supply remain unchanged
29
What are main features of the supply curve?
1) A casual relationship - price changes cause the change in quantity supplied 2) A linear relationship - supply curve is drawn for simplicity as a straight line. Would be acceptable for the supply curve to be represented in a non-linear way like upward slopping curve supply at a certain price 3) A time based relationship - time period usually in weekly
30
How does income determine demand?
Ability to pay determines effective demand. A positive relationship between income and demand. Increase in ability to pay leads to increase in demand. Ability to pay falls, less is demanded. = normal goods (most products). Some products have neg relationship, les is purchased as income rises = inferior goods (poor quality, used). Better off consumers buy superior quality with increased income. In recession, consumers buy more inferior goods to replace normal goods.
31
Define a normal good.
where quality demanded increases as income rises
32
Define an inferior good.
where the quantity demanded increases as income decreases
33
How does price and availability of related products determine demand?
1) Substitutes - alternative goods that satisfy a want or need. Change in price of one likely to effect demand of the other, depending on degree of substitutability (how close it is to the product) (coke + pepsi) 2) Complements - goods that have joint demand, add to satisfaction that consumers get from another product. A change in price or availability of either one of these products will have effect on demand fora complementary good (car + petrol)
34
How does fashion, tastes and attitudes determine demand?
More difficult to determine, depends on individual choice + behaviour. Might be built up over time or influenced by what they have read or what advertisers want consumers to believe about product.
35
How does costs determine supply?
Firms' supply decisions always drive up cost of production + distribution of products to customers. Labour costs, cost of energy or transport, productivity of workers can have impact on costs, replacing labour with capital may reduce costs in some firms.
36
How does size and nature of industry determine supply?
If industry grows in size, more products supplied. This growth may attract new entrants, increasing competition, prices may fall resulting in some firms leaving the industry. Some industries have deliberate supply restrictions to keep prices up.
37
How does change in price of other products determine supply?
Most firms are continually aware of competitors. If competitor lowers price, other firms could supply less products to keep their price unchanged. If competitor increases price, other firms can supply more (if they can keep their costs under control)
38
How does government policy determine supply?
Gov's influence companies + their supply of products. New tax on products reduces supply: subsidies usually result in an increase in supply. Can impose taxes like excise/ad valorem tax on the output of firms or general sales tax on consumers. Impact of tax = cost increase as forms may pass on tax to consumer by higher prices. Indirect tax = decrease in supply. Less tax or subsidies can increase supply by encouraging firms to reduce prices for output.
39
What other factors determine supply?
In agricultural markets, supply is affected by uncertain weather conditions.
40
What is indirect tax?
a tax levied on g+s like a general sales tax
41
What is an extension of demand or supply?
an increase in the quantity demanded or quantity supplied
42
What is a contraction of demand or supply?
a decrease in the quantity demanded or quantity supplied
43
What does a movement along the demand/ supply curve show?
How the quantity supplied responds to a change in the price of the product. An increase in quantity demanded or supplied = extension of demand/supply. A decrease in quantity demanded or supplied = contraction of demand/ supply
44
What does a shift on a demand / supply curve show?
Its in response to a change in any of the non-price determinates of demand/ supply. Such shifts to the right or left depends on the cause. A shift to the right is an increase in demand or a increase in supply; a shift to the left is a decrease in demand or a decrease in supply.
45
What is elasticity?
a numerical measure of responsiveness of one variable following a change in another variable, ceteris paribus or other things equal.
46
What does 'elastic' mean?
where the relative change in the quantity demanded is greater than the change in price, income or the prices of substitutes and complements.
47
What does 'inelastic' mean?
where the relative change in the quantity demanded is less than the change in price, income or the prices of substitutes and complements
48
Define price elasticity of demand (PED).
measures of the responsiveness of the quantity demanded for a product following a change in prices of the product
49
What does it mean when price is elastic?
when the relative change in the quantity demanded is greater than the change in price of the product
50
What does it mean when price is inelastic?
when the relative change in quantity demanded is less than the change in price of the product
51
What does a negative PED figure mean?
Its the negative (or inverse) relationship between price and quantity demanded, as price does up, quantity demanded goes down. As price decreases, quantity demanded increases. (economists usually ignore neg sign)
51
What is income elasticity of demand (YED)?
measures the responsiveness of the quantity demanded for a product following a change in consumer income. If demand is responsive to change in income, % change in quantity demanded greater than % change in come = income elastic outcome, YED is greater than 1 If demand is not responsive to income change, quantity demand in income = inelastic, value less than 1.
52
What is cross elasticity of demand (XED)?
measures the responsiveness of the quantity demanded for one product, following a change in the price of another product. Demand is cross elastic when quantity demanded for one product responds more than proportionately to change in price of another product = XED greater than 1. When quantity demanded for one product responds less than proportionately to a change in the price of another product, demand is said to be cross inelastic = XED less than 1.
53
What is the classification of a normal good in relation to income?
quantity demanded increases as income increases = most goods. YED is pos + expected to be between 0 and 1
54
What is the classification of a inferior good in relation to income?
quantity demanded decreases as income rises or increases as income falls = poor quality products. YED is neg, size indicates relationship between change in come + quantity demanded.
55
What is the classification of a necessity good in relation to income?
Type of normal good. Quantity demanded unlikely to change as income changes = Staple foodstuff. YED is pos but close to zero. Low value for YED shows limit to quantity of these goods households purchase even in change of income.
56
What is the classification of a superior good in relation to income?
Positive YED greater than 1. Is a normal good where quantity demanded is responsive to change in income. Higher the YED = greater the change in quantity demanded.
57
How is the sign important for cross elasticity of demand?
Sign of XED (pos or neg) is NB as it indicates relationship between the two goods. 1) When XED pos, two goods are substitutes = increase in price of one good causes increase in quantity demanded of the other good. 2) XED id neg when two products are complements/ jointly demanded. Increase in price of one product causes decrease in demand for other product (who's price remained unchanged).
58
What does perfectly elastic mean?
where all that is produced is sold at a given price. At 10$ no demand, but at 9$ demand is infinite. (Horizontal)
59
What does highly elastic mean?
Where % change in demand is bigger than % change in price, like luxury items or goods with lots of substitutes. Has value greater than 1. Change in demand is proportional to change in price, indicates consumers respond to external factors when buying a product. (Almost flat line / downward sloping)
59
What is unit elasticity?
where the change in price is relatively the same as the change in quantity demanded. when % change in demand = % change in price, for normal goods. Demand is said to have unit elasticity over particular price range. PED = 1. ( Akuut line, 45 degree)
60
What does highly inelastic mean?
% change in demand is smaller than the % change in price. Demand remains relatively constant even with changes in economic factors. Change in price causes only small % change in demand. Usually for necessities of life goods. 0< elasticity of demand <1. ( Very vertical, steep downward sloping)
61
What does perfectly inelastic mean?
where a change in price has no effect on the quantity demand. PED values from ) to infinity. Regardless of price change, consumers willing to + able to buy same amount. Goods essential to life. Elasticity of demand is 0. (Vertical line)
62
What variation is in price elasticity of demand along length of a demand curve?
PED is not always the same throughout entire demand curve. When prices are high + quantity demanded is low, a large change price will not be large % change. Demand is price elastic on upper part of demand curve and PED is inelastic in lower part of demand curve.
63
What are the factors affecting price elasticity of demand?
- Availability and attractiveness of substitutes - Relative expense of the product - Time period
64
How does availability and attractiveness of substitutes influence price elasticity of demand?
1) Greater number of substitutes and the more closely substitutable products are, the more consumers will switch between products as price rises / or toward product if price falls. 2) NB to distinguish between substitutability of products within same group of products + substitutability with goods of other groupings. 3) Goods can have fairly high PED because of range of substitutes. More groupings products are classified into, more price elastic. The narrower the market, PED will be greater 4) Quality + extent of info about products consumers need to satisfy wants + needs 5) Whether necessity or luxury. Essential good = price inelastic. Luxury = price elastic, consumers can do without them. 6) Addictive properties of product = likely more i=price inelastic 7) Brand image of product (can be price inelastic)
65
How does relative expense of the product influence price elasticity of demand?
Rise in price reduces the purchasing power of a person's income + ability to pay for products. Larger proportion of income that price represents, the larger impact on consumers' income as result of price change. Greater the relative proportion of income accounted for by products, the higher the PED
66
How does time period influence price elasticity of demand?
Short run = hard for people to change spending patterns. Long run = if price goes up and stays up, over time people will adapt + adjust, PED of product increases over time. Price inelastic as consumers look at other products in market
67
What are factors affecting Income elasticity of demand?
Availability of substitute goods, necessity of the g+s, proportion of income spent on the g or s.
68
What are factors affecting cross elasticity of demand?
Whether goods are complements or substitutes (depends on costs of substitution), strength of brand loyalty for a product.
69
What is the relationship between price elasticity of demand and total expenditure on a product?
Total expenditure = price x total rev for a firm. NB when firm is planning a price change, aware of likely PED for a product: - When demand in price inelastic, business can increase price to increase rev, Reducing price not smart as rev will fall. - When demand is price elastic, business should decrease price to increase quantity demanded + thus rev. Increasing price would only decrease sales + rev.
70
How can a firm make their product more price inelastic to increase revenue?
- Persuasive advertising to influence consumers to buy product, highlights benefits compared to substitutes = shift to right on demand curve, increase sales without price change - Brand image for product to make it seem superior to similar products from competitors - Firm can take over/ merge with competitor to increase market share + thus control over market - Firm can create monopoly product: firm is only producer of product protected by patent or regulations
71
ow can a firm make their product more price elastic?
Difficult, can be done if product one of many in market where demand is price sensitive. Retailers use slares promotions to increase sales by reducing price of product with intention that consumers continue to buy product when promotion ends. This risky, competitors can make same price reduction + all producers lose out.
72
How can PED be used?
Can explain: - price variations - impact of changing prices on consumer expenditure and sales revenue - effects of changes in indirect taxes on gov income
73
How can the relationship between PED and price variation in a market be used?
Businesses use price variation to increase their revenue. They are aware of variations of PED in their markets + try to use opportunities presented to them to increase sales and revenue.
74
How can income elasticity of demand (YED) be used in a firms' decision-making?
YED provides info on how quantity demanded varies with change in income. Can be very NB for forecasting future demand for range of g+s. If YED for normal good is greater than 1, demand will grow more quickly than consumer incomes, usually in times of sustained economic growth. During recession, these firms suffer reduced demand. If YED is negative, for inferior goods, firms producing these can expect sales to decline when economy doing well + in recession, demand will likely increase.
75
How can cross elasticity of demand (XED) be used in a firm's decision-making?
Firms concerned about the impact competitors' pricing strategies will have on the demand for their own products. Substitutes = pos XED. Higher price = consumers likely buy cheaper substitute. Higher degree of interdependence between suppliers, dangers of competitors cutting its price = significant. Size of XED is NB. Higher XED leads to greater decrease in quantity demanded. More firms want consumers to buy range of complementary products, not just one. XED identifies most complementary products + help firms introduce a pricing system that generates more rev.
76
What is price elasticity of supply (PES)?
a numerical measure of the responsiveness of the quantity supplied to a change in the price of the product. Supply curve is upward-sloping = PES always positive.
76
What is price elastic supply?
the quantity supplied responds more than proportionately to a change in its price. PES greater than 1.
77
What is price inelastic supply?
the quantity supplied responds less than proportionately to a change in its price. PES less than 1.
78
what does it mean when PES is 0?
It is not possible for a producer to increase or decrease supply, regardless of any change in price of the product.
79
What are factors affecting price elasticity of supply?
Key to PES is flexibility. If businesses are more flexible in how they operate, supply tends to be more elastic. Main influences: 1) Availability of stocks 2) Time period 3) Productivity capacity
80
How does availability of stocks affect PES?
The ease with which firms can accumulate or reduce stocks of goods can influence PES. Stocks allow companies to meet variations in demand through changing output rather than changing the price. The more easily producers can do this, the higher the PES. Firms providing services can't build stocks because usually their supply is fixed in short-term.
81
How does time period affect PES?
Time-period or ease with which producers can increase production. In short-run = businesses + industries with spare productive capacity tend to have higher PES. However shortages of critical factor inputs (skilled workers, fuel components) can lead to an inelastic PES.
82
How does productive capacity affect PES?
Over time, firms may increase their available productive capacity by investing in more capital equipment (tech advances). Over time, businesses can enter of or leave an industry + this will increase flexibility of supply.
83
What are implications for speed and ease with which firms react to changing market conditions?
In short run PES for agricultural firms, more price inelastic than PES for manufactured goods. Businesses hold stock for variations in demand. In long run, increase in demand is expected to persist, scale of business can expand to increase productive capacity, takes times depending on scale of change required. In agricultural markets = market supply more price inelastic than manufactured goods. Supply unstable as crop yields are difficult to predict due to external factors. Stability of global markets is affected by changes in demand for manufactured goods + agricultural products. Changes in demand have greater effect on agricultural markets than manufactured goods markets where PES is inelastic. When PES is price elastic, effects of changes in demand on price is not as big as when PES is price inelastic.
84
Define equilibrium.
a situation where there is no tendency to change in a market. Quantity demanded = quantity supplied.
85
Define disequilibrium?
a situation where demand and supply are not equal in a market.
86
How does market equilibrium look in the real world?
Real world markets are invariably in disequilibrium as market supply and demand are not equal. Excess demand is usual. Market mechanisms adjust supply or demand to reach the equilibrium position. Excess supply = shows price is too high, suppliers must reduce prices. Excess demand = shows suppliers should increase price of product, price continues to increase until market reaches new equilibrium position and clears price mechanism.
87
What is an equilibrium price?
the price where demand and supply are equal, where the market clears.
88
What is an equilibrium quantity?
the amount that is traded at the equilibrium price.
89
How does market disequilibrium look in the real world?
If quantity supplied is greater than quantity demanded = unplanned stock building. Firms can react by cutting prices or reducing quantity they supply. More consumers will want to buy, disequilibrium will narrow. If no changes to conditions of demand + supply and firms aren't prevented to produce, market price + quantity will go back to equilibrium. If quantity demanded greater than quantity supplied (excess demand), consumers will want a good deal. But low prices + low supplies not enough to meet demand, run out of stock, unmet orders. Profit-hungry firms will raise prices, increase number of items for sale. Quantity demanded will fall, market will adjust back to equilibrium and clear. Motives and plans of consumers and suppliers always drives it back to equilibrium place, but takes long time.
90
Why are there changes in demand or supply?
A shift in demand or supply curve due to a change in factors other than price of the product. Aren't always constant.
91
What do shifts in the demand curve mean?
Rightward shift indicates an increase in demand Leftward shift indicates a decrease in demand
92
What causes a shift in the demand curve?
- Income / the ability to pay - The price and availability of related products - Fashion, taste and attitudes
93
Elaborate why income causes a demand curve shift?
things that influence someone's ability to pay: 1) income (purchasing power of income) 2) availability of loans or credit and the interest rate that must be paid on loans or credit card balances Increase in income, right shift in demand curve. Decrease in ability to pay can also increase demand.
94
Elaborate why the price and availability of related products causes a demand curve shift?
if price rises, the demand for substitutes will increase as consumers switch demand to cheaper products = demand curve to the left. Will shift to the right if price for substitutes increase or positive report in media of healthier report. For complements, rise in price of one product reduces quantity demanded of it + associated product. Fall in price will increase quantity demanded of it + its complement.
95
Elaborate why fashion, taste and attitudes causes a demand curve shift?
An individual's behaviour is a reflection of their tastes, preferences towards different types of g+s. (reputation for reliability, better quality, fashionable)
96
What do shifts in the supply curve mean?
Change in non-price factors: - Rightward shift indicates an increase in supply - Leftward shift indicates a decrease in supply
97
What causes a shift in the supply curve?
1) Changes in the prices of other products 2) Size and nature of the industry 3) Costs associated with supply 4) Government policy
98
How does supply and demand e=affect each other?
Both supply and demand conditions change simultaneously. Increase of demand puts upward pressure on price. But simultaneous increase in supply puts downward pressure on price. Resulting effect = equilibrium price is unchanged, although significant increase in quantity traded.
99
What are excise duties?
A specific tax that is levied on goods like cigarettes.
100
What are ad valorem taxes?
a tax that is charged as a given % of the price
101
What is the relationship between two products (substitutes and complements) when there is a change of price in different market conditions?
Alternative demand = substitutes. A rise in price of one product will lead to an increase in demand + rise in price of substitute product Joint demand = complement, its consumed with another product. An increase in supply will see the price of one product fall, prompting and increase in demand for the complement. Derived demand = where the demand for g+s depends upon the use that can be made from it. Something is required because its needed for the production of other goods + services. usually labour. Demand for hotel workers from demand for hotel services. Joint supply = when two items are produced together but for different purposes. Increase in demand leads to an increase in supply + fall in price.
102
What ate the functions of price in resource allocation?
Prices have NB role in allocation of resources in market economy. Price mechanism works automatically = 'invisible hand' by Adam Smith. 1) Rationing 2) Signaling and transmission of preferences 3) Provision of incentive
103
Explain rationing as a function of resource allocation?
Rationing is where a producer limits the supply of products in market to ensure the product remain exclusive. This process is automatic. Exclusive products likely have high prices, rationing happens because of high prices. Demand is limited, ensures it is in line with quantity supplied in the market.
104
What is signaling?
where decisions taken by buyers or sellers are determined by price
105
What is the transmission of preferences?
the automatic way in which the market allows the wants of consumers to be made known to producers
106
Explain signaling and the transmission of preferences as a function of resource allocation?
Prices act as signal to producers + consumers. Rise in quantity demanded = increase of price, signaling to produces to put more products on the market If consumers withhold demand ( too expensive, not liked), prices will fall. This signals to producers less should be produced or to improve product, price mechanism works in such a way that outcome is new equilibrium position with consumers' demand = producers' supply.
107
What is incentive?
when low or high prices influence consumption and production by encouraging buyers to consume + sellers to produce.
108
Explain provision of incentive as a function of resource allocation?
Low prices + special offers (like discounts) encourage consumers to buy more goods. They get more satisfaction from consuming a product they think is a good deal. Higher prices can stop consumers purchasing a good but can encourage suppliers to produce more for the market in a way that low prices can discourage their willingness to supply. If low prices persist, suppliers may decide to exit market.
109
What is consumer surplus?
the difference between the price a consumer is willing to pay for a product + its market price.
110
How does the demand curve show consumer surplus?
Demand curve shows how much consumers are willing to pay for different quantities of products they want to consume. Mostly, price is given and firms are unable to charge lower/ higher according to customer level of satisfaction. When price falls = more demanded, product appeals to more consumers, rise in price = fall in demand, price increase is greater than satisfaction of some of the consumers. As price increases, consumer surplus decreases = less people are prepared to pay higher prices. Fall in market price causes increase in consumer surplus for new and existing customers, they're willing to buy more of product at reduced price.
111
What is producer surplus?
the difference between the price a producer is willing to accept and what is actually paid
112
How does the supply curve show producer surplus?
Producers are keen to supply to consumers willing to pay above price they normally accept. Such customers add extra revenue. This additional rev = producer surplus. Extent of this producer surplus is shown above supply curve but below price line P1. Selling below P1 = selling at discounted price. Below P, producers unwilling to sell, as cost of production is not covered.
113
What factors affect producer surplus?
- Quality of the product - Necessity of the service - Demands of the market - Convenience of the purchase - Competitors' service - Amount of the good
114
What is the significance of price elasticity of demand in determining extent of consumer surplus change?
Impact of price change on consumer surplus: - the extent of price change, large change in price = greater the change in consumer surplus - price elasticity of demand, when demand is price inelastic, increase in price will see less of fall in consumer surplus, then if demand is price elastic. Elastic= area of loss of consumer surplus is bigger.
115
What is the significance of price elasticity of supply in determining extent of producer surplus change?
Impact of price change on prod surplus depends on: - extent of price change, greater change (up or down) = greater change in producer surplus - price elasticity of supply, if elastic = increase in price causes greater producer surplus than if supply is inelastic. Already producers in markets willing to supply at lower price, increase in price adds to consumer surplus for the same increase in price, gain in producer surplus bigger when demand is elastic.
116
What is consumer surplus + producer surplus mean?
The sum of consumer and producer surplus together in a market represents the net benefit to society of a market's operations.