Ch.2 Price Determination In A Competitive Market Flashcards

1
Q

What is a market?

A

A situation in which buyers and sellers come together to engage in trade. Both buyers and sellers have to be willing partners to the exchange.

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2
Q

What is a competitive market?

A

A situation where there is a large number of potential buyers and sellers with abundant information about the market. Each individual buyer and seller are powerless to influencing the ruling market price. The ruling market price (equilibrium price) is determined by supply and demand. A highly competitive market also lacks barriers to entry and exit.

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3
Q

What is the equilibrium price?

A

The price at which the planned demand of consumers equals the planned supply of firms.

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4
Q

What are the determinant of the demand for goods and services?

A

Demand and effective demand.

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5
Q

What is demand?

A

The quantity of a good or service that consumers are willing and able to buy at given prices in a particular time period..

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6
Q

What is effective demand?

A

The consumers desire to buy a good backed up by the ability to pay.

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7
Q

What is supply?

A

The quantity of a good or service that firms are willing and able to sell at a given price in a given period of time.

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8
Q

What does the law of demand state?

A

The law of demand states that as the price of a good or service falls, the the quantity demanded increase. This is an inverse relationship.

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9
Q

What are the assumptions made when analysing the effects of a change in price on the quantity demanded?

A

We assume that all other possible determinants of demand are held constant. Economics refer to this assumption as “ceteris paribus”. An increase in the quantity demanded resulting from a fall in price is known as an extension of demand, a fall in quantity demanded resulting from an increase in price is known as a contraction of demand.

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10
Q

How do households and firms operate simultaneously in two sets of markets?

A

Consumers buy goods and services produced and supplied by firms. However, for household demand in the goods market to be in effective demand, households must first sell their labour, or possibly the services of any capital or land they own, in the markets for factors of production.

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11
Q

What is market demand?

A

The quantity of a good or service that all the consumers in a market are willing and able to buy at different market prices.

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12
Q

What is individual demand?

A

The quantity that a particular individual would like to buy.

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13
Q

What causes a demand curve to shift?

A

Factors that may lead a demand curve to shift are the conditions of demand.

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14
Q

What are the conditions for demand?

A

Factors other than the price of the food that lead to a change in position of the demand curve.

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15
Q

What do the conditions of demand include?

A

Real disposable income (the incomes of individuals after the effects of inflation, taxation and benefits are taken into account.

Tastes and preferences (the popularity of goods and services is often influenced by changes in society’s preferences and may be influenced by the media, advertising and technological change).

Population (the size, age and gender composition of the population will affect the market size for many products).

Prices of substitute products (substitute products are those in competitive demand that may be seen as close alternatives to a particular good or service).

Prices of complementary products (complementary products are this’d in joint demand, I.e. Demanded together with other goods and services).

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16
Q

What is the definition of taxation?

A

A charge placed by the government on various forms of economic activity. Most taxes are on forms of income and types of spending.

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17
Q

What is a substitute good?

A

A good that may be consumed as an alternative to another good.

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18
Q

What is a complementary good?

A

A good that tends to be consumed together with another good.

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19
Q

What is a normal good?

A

A good for which demand increases as income rises and demand decreases as income falls.

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20
Q

What is an inferior good?

A

A good for which demand decreases as income rises and demand increases as income falls.

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21
Q

How are inferior and normal goods dependent?

A

For an individual, whether a good is normal or inferior depends on personal income, tastes, and possibly age. For a child, junk food and sweets is normally a normal good, but as children get older, tastes change, and sweets may very well become an inferior good.

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22
Q

What is elasticity?

A

The proportionate responsiveness of a second variable to an initial change in the first variable.

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23
Q

What is price elasticity of demand?

A

The responsiveness of quantity demanded of a good time a change in price. The formula for price elasticity of demand is percentage change in quantity demanded divided by percentage change in price. The value for price elasticity of demand is usually negative because of the assumed inverse relationship between price and quantity demanded.

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24
Q

How is price inelastic demand shown?

A

When demand for a product is price inelastic, the value of PED is between 0-1, ignoring the minus sign.

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25
Q

How is price elastic demand shown?

A

When demand for a product is price elastic, the value of PED is greater than 1, ignoring the minus sign.

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26
Q

How is a relatively inelastic good represented on a graph?

A

On the x axis is the quantity sold (in a time frame) and the y axis is price (£). The line on the graph will be mostly or the majority more verticale, showing that a change in price will not have a large effect on the quantity demanded.

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27
Q

How is a relatively elastic good represented on a graph?

A

With price on the y axis and quantity sold on the X axis the graphs line is relatively horizontal, showing that a small change in price can lead to a large change in quantity sold.

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28
Q

How is unitary elastic demand shown?

A

When demand is unitary elastic, the value of PED is exactly 1, ignoring the minus sign. The demand curve is a regular hyperbola, or a curve sloping from high price to low quantity.

29
Q

How is perfectly inelastic demand shown?

A

The value of PED is 0. The demand curve will be completely vertical.

30
Q

How is perfectly elastic demand shown?

A

When demand is perfectly elastic the value of PED is infinity. The demand will be completely horizontal.

31
Q

How does price elasticity of demand affect total revenue?

A

The price elasticity of demand of a product determines consumer spending. This means that:

If demand is price elastic, a reduction in price leads to an increase in total revenue.

If demand is price inelastic, a reduction in price leads to a decrease in total revenue.

If demand is price elastic, a price increase leads to a reduction in the total revenue.

If demand is price inelastic, a price increase leads to a increase in total revenue.

32
Q

What are the determinants of price elasticity of demand?

A

Availability of close substitutes: if a very close substitute exists, then an increase in price may cause people to buy the substitute. The greater the amount of substitutes the more elastic the product, which means if there is a smaller amount of substitutes it is more of a inelastic good.

Percentage of income spent on the product: a more expensive product will mean more people are sensitive to changes in price, whereas a more inexpensive product will mean consumers will be less sensitive to changes in price.

Nature of the product: if a product is deemed a necessity (cigarettes - a nicotine addiction) it is more likely to be price inelastic, as few alternatives will exist in the viewpoint of the consumer. However, if a product is seen as a luxury then demand will tend to be price elastic.

Time period: the longer the time period following a price change, the easier it is for a consumer to adjust their spending patterns, to research alternatives, and for more alternatives to become available. This makes demand more price elastic in the long run, since in the short run consumers may not have as large of a choice.

Broad or specific market definition: a broad market category, e.g. Food, is likely to have price inelastic demand, whereas a specific product in a market segment, e.g. Baked beans produced by a particular firm, is likely to have more price elastic demand.

33
Q

What is income elasticity of demand?

A

The responsiveness of demand for a good to a change in consumers real income. It is calculated by dividing the percentage change in quantity demanded by by the percentage change in income.

34
Q

What does the nature of income elasticity of demand depend on?

A

Whether or not a good is inferior or normal. Income elasticity of demand is always negative for an inferior good, and it is always positive for a normal good. This is because the quantity demanded of an inferior good falls as income rises, whereas the quantity demanded for a normal good rises with income.

35
Q

How do you identify between a superior good (a luxury) and a basic good?

A

The income elasticity of a superior good greater than 1, whereas the income elasticity of a basic good is between 0 and 1. Although the quantity demanded rises with income for a normal good, it rises more than proportionately for a superior good (such as a luxury car). Conversely, demand for a basic good such as shoe polish rises at a slower rate than income.

36
Q

When is income elastic?

A

This is when the value for YED (income elasticity of demand) is greater than 1. This is also referred to as a superior or luxury good.

37
Q

When is a good income inelastic?

A

This is when the YED is between 0 and 1, also referred to as a basic good.

38
Q

What does a negative and positive YED represent?

A

When demand for a good is negative income elastic, the value of YED is negative. If a good has a negative YED it is referred to as an inferior good.

If a good has a positive YED it means that it is a normal good.

39
Q

What is cross price elasticity of demand (XED)?

A

A measure of the extent to which the demand for a good changes in response to a change in the price of another good; it is calculated by dividing the percentage change in quantity demanded of one good by the percentage change in price of another.

40
Q

What are the three possibilities of cross elasticity of demand?

A

If a good is complementary (joint demand)
If a good is a substitute (competing demand)
Or if there is an absence of any discernible demand relationship.

41
Q

What does a positive cross price elasticity represent?

A

A positive cross price elasticity means that goods a and b are substitutes. This means a rise in price for product B increases the quantity demanded of product A.

42
Q

What does a negative cross price elasticity represent?

A

A negative cross price elasticity means that products A and B are complements. This means that a rise in price for product B will decrease the demand for product A.

43
Q

What is supply?

A

The quantity of a good or service that firms plan to sell at given prices in a particular time period.

44
Q

What is the law of supply?

A

The law of supply states that as the price increases the quantity supplied will also increase. Firms are assumed to want to maximise their profits and so a higher price gives an incentive for firms to increase production.

An increase in quantity supplied (caused by an increase in price) is called an extension in supply. Conversely, a contraction in supply is caused by a decrease in supply led by a decrease in price.

45
Q

What are the conditions of supply?

A

These are the factors other than the price of the good that lead to a change in position along the supply curve.

46
Q

What are some of the conditions of supply?

A

Some of the conditions of supply are the:

  • Production costs (wages, raw material cost, energy cost, building rent and interest on borrowing)
  • Productivity of labour (output per worker per hour. - affected by the amount of training offered and quality of capital equipment used).
  • Taxes on businesses (excise duties, VAT and business rates).
  • Production subsidies (government grants to firms to encourage greater production).
  • Technology (improvements in technology may lead to improvements in productivity).
47
Q

What happens when one of the conditions of supply change?

A

If any of the factors change the supply curve will also shift, either to the right or the left. A rightward shift is known as an increase in supply, whereas a leftward shift is known as a decrease in supply. A rightward shift means that a greater amount of goods and services is supplied at any given price, whereas a leftward shift means that a lower quantity is supplied at any given price.

48
Q

What is price elasticity of supply?

A

This is the responsiveness of the quantity supplied of a good or service to a change in price; the equation for the price elasticity of supply is: percentage change in quantity supplied divided by the percentage change in price.

49
Q

Why will price elasticity of supply always be positive?

A

Since a decrease in price will lead to a decrease in supply the direct relationship between the two values means PES will always be positive.

50
Q

When is there price inelastic supply?

A

When the supply of a product is price inelastic the value is between 0 and 1. With price inelastic supply the supply curve will be relatively steep.

51
Q

When is there price elastic supply?

A

This is when the value of PES is above 1. This means the supply curve will be relatively shallow.

52
Q

When is unitary elastic supply achieved?

A

This is when the value of PES is exactly 1. This is represented when there is any straight line going through the origin.

53
Q

When is there perfectly inelastic supply?

A

When the supply of a product is perfectly inelastic the value of the PES is 0. This is represented on the supply curve as a vertical line.

54
Q

When is there a perfectly elastic supply?

A

Perfectly elastic supply is shown when the value of PES is infinity. The supply curve for perfectly elastic supply is a horizontal line.

55
Q

What are the determinants of price elasticity of supply?

A

The time taken to expand supply (if it is difficult or time consuming to increase supply then supply will be relatively price inelastic).

The size of the spare capacity (firms with machinery, factory space or labour that is not fully utilised can expand supply (production) in the short run - supply will be more elastic.

Available stocks (firms with spare stock will be able to respond relatively quickly to a price increase - supply will tend to be more elastic).

Ease of switching production (if suppliers can easily adjust their factors of production (mainly labour and capital), to respond to changes in prices, the supply is mainly elastic. However if a firm has mainly specialised capital and labour the supply is mainly inelastic.

56
Q

What are the determinants of market equilibrium?

A

The equilibrium market price and quantity are determined by the interaction of the market demand and supply curves for a good.

When quantity demanded equals quantity supplied in a market for a product, the market is in a state of equilibrium.

Everything above a market equilibrium point is excess supply and everything below the market equilibrium point is excess demand.

57
Q

What market disequilibrium?

A

This is a situation where the quantity demanded does not equal the quantity demanded.

58
Q

What is included in market equilibrium?

A

A price above a market equilibrium price means there is excess supply, a price below the market equilibrium price means there is excess demand.

The excess supply can be explained since the high price means that producers have a large incentive to create the product, but only a small amount is demanded.

The excess demand can be explained since the low price gives less incentive for producers to keep creating the product, but there is a high level of demand.

59
Q

If a market is in disequilibrium what happens so that it is resolved?

A

Eventually, market forces will lead to the excess supply or excess demand to be resolved. If there is excess supply, a decrease in price is needed, which causes a contraction in supply and an extension in demand.

If there is an excess in demand it means that price should be increased, which causes a contraction in demand and and an increase in supply as there is more incentive for producers to create the product.

60
Q

What changes the equilibrium price?

A

A change in the market equilibrium price may be caused by either a shift of the demand curve or a shift of the supply curve.

61
Q

How does an increase in demand affect the market equilibrium price?

A

An increase in demand for a normal good following a rise in incomes, would lead to a rightward shift of the demand curve. This leads to an increase in equilibrium price and quantity.

62
Q

How does a decrease in demand affect the market equilibrium price?

A

A decrease in demand for a normal good following a decrease in real incomes will cause a leftward shift of the demand curve, which decreases the equilibrium price and quantity.

63
Q

How does an increase in supply shift the demand curve?

A

An increase in supply (e.g. For coffee following a harvest increase) would lead to a rightward shift in supply, which decreases prices and increases quantity.

64
Q

How does a decrease in supply lead to a shift in the supply curve?

A

A decrease in supply (e.g. For a decreased harvest of coffee) would lead to a leftward shift of the supply curve, which increases price and decreases the quantity supplied.

65
Q

What other factors can cause shifts in the demand and supply curve?

A

Shifts in the demand and supply curves can also be caused by changes in associated markets, such as Abu changes in prices of goods in joint demand, joint supply, composite demand, or derived demand.

66
Q

What is joint demand?

A

These are goods that tend to be demanded together. I.e. Complementary goods. This means that if there is an increase in demand for one good then there will be an increase in demand for the good that is demanded with it.
This is the opposite of substitute goods or goods that are competing in demand.

67
Q

What is joint supply?

A

This is when the production of one good leads to the production of another good. A good example is beef and leather.

68
Q

What is composite demand?

A

Composite demand is when a good is demanded for more than one distinct use. This means that if there is an increase in demand for a potential use it reduces the available supply for other uses.

69
Q

What is derived demand?

A

This is when a particular good or factor of production is necessary for the provision of another good or service.