Microeconomics Definitions Flashcards
Paper 1
Market
The ‘place’ in which goods are bought and sold
Normative statement
a statement that includes a value judgement and cannot be refuted just by looking at the evidence
Positive statement
A statement of fact that can be scientifically tested to see if it is correct or incorrect
Value judgement
an opinion about whether something is desirable or not
need
something that is necessary for survival e.g. food, shelter
want
something that is desirable, but is not necessary for human survival e.g. fashionable clothing
economic welfare
the economic well-being of an individual, a group within a society, or an economy
economic system
the set of instructions within which a community decides what, how and for whom to produce
market economy
an economy in which goods and services are purchased through the price mechanism in a system of markets
command economy
(also known as a planned economy) an economy in which government officials or planners allocate economic resources to firms and other productive enterprises
mixed economy
an economy that contains both a large market sector and a large non-market sector in which the planning mechanism operates
production
a process, or set of processes, that converts inputs into output of goods
capital good
a good which is used in the production of other goods and services (producer good)
consumer good
A good which is consumed by individuals or households to satisfy their needs or wants
factors of production
inputs into the production process, such as land, labour, capital and enterprise
finite resource
a resource, such as oil, which is scarce and runs out as it is used. also known as a non-renewable resource
renewable resource
a resource, such as timber, that with careful management can be renewed as it is used
economic good
has an opportunity cost
free good
has no opportunity cost
fundamental economic good
how best to make decisions about the allocation of scarce resources among competing uses so as to improve and maximise human happiness and welfare
Scarcity
results from the fact that people have unlimited wants but resources to meet these wants are limited. In essence, people would like to consume more goods and services than the economy is able to produce with its limited resources
opportunity cost
the cost of giving up the next best alternative
economic growth
The increase in the potential level of real output the economy can produce over a period of time
technical progress
new and better ways of making goods and new techniques for producing more output from scarce resources
full employment
When all who are able and willing to work are employed
Unemployment
When not all of those who are able and willing to work are employed
choice
Choosing between alternatives when making a decision on how to use scarce resources
resource allocation
The process through which the available factors of production are assigned to produce different goods and services
productive efficiency
For the economy as a whole occurs when it is impossible to produce more of one good without producing less of another. For a firm it occurs when the average total cost of production is minimised.
allocative efficiency
occurs when the available economic resources are used to produce the combination of goods and services that best matches people’s tastes and preferences (producing the things people most want)// occurs when it is impossible to improve overall economic welfare by reallocating resources between markets. In the whole economy, price must equal marginal cost (P=MC) in every market
competitive market
A market in which the large number of buyers and sellers possess good market information and can easily enter or leave the market
equilibrium market
the price at which planned demand for a good or service exactly equals planned supply
supply
the quantity of a good or service that businesses are willing and able to sell at given prices in a given period of time
demand
the quantity of a good or service that consumers are willing and able to buy at given prices in a given period of time. For economists, demand is always effective demand
effective demand
the desire for a good or service backed by an ability to pay
market demand
the quantity of a good or service that all the consumers in a market are willing and able to buy at different market prices
condition of demand
a determinant of demand, other than the good’s own price, that fixes the position of the demand curve
increase in demand
a rightward shift of the demand curve
decrease in demand
leftward shift of the demand curve
normal good
a good for which demand increases as income increases and demand decreases as income falls
inferior good
a good for which demand decreases as income increases and demand increases as income falls
elasticity
the proportionate responsiveness of a second variable to an initial change in the first variable
price elasticity of demand
measures the extent to which the demand for a good changes in response to a change in the price of that good
income elasticity of demand
measures the extent to which the demand for a good changes in response to a change in income; it is calculated by dividing the percentage change in quantity demanded by the percentage change in income
market supply
the quantity of a good or service that all firms plan to sell at given prices in a given period of time
cross- elasticity of demand
measures 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 the price of the other good
Profit
the difference between total sales revenue and total costs of production
total revenue
the money a firm receives from selling its output, calculated by multiplying the price by the quantity sold
conditions of supply
determinants of supply, other than the good’s own price, that fix the position of the supply curve
increase in supply
a rightward shift of the supply curve
decrease in supply
a leftward shift of the supply curve
price elasticity of supply
measures the extent of which the supply of a good changes in response to a change in the price of that good
equilibrium
a state of rest or balance between opposing forces
disequilibrium
a situation in a market when there is excess supply or excess demand
market equilibrium
a market is in equilibrium when planned demand equals planned supply and the demand curve crosses the supply curve. In this situation there is no excess demand or excess supply in the market. Unless some event disturbs the equilibrium, there is no reason for the price to change.
market disequilibruim
exists at any other price other than the equilibrium price. When the market is in disequilibrium, either excess demand or excess supply exists in the market. Excess demand causes the price to rise until a new equilibrium is established. Conversely, excess supply causes the market price to fall until equilibrium is achieved.
excess supply
when firms wish to sell more than consumers wish to buy, with the price above the equilibrium price
excess demand
when consumers wish to buy more than firms wish to sell, with the price below the equilibrium price
joint supply
when one good is produced, another good is also produced from the same raw materials
competing supply
when raw materials are used to produce one good they cannot be used to produce another good
complementary good
a good in joint demand, or a good which is demanded at the same time as the other good
substitute good
a good in competing demand, namely a good which can be used in place of the other good
composite demand
demand for a good which has more than one use
derived demand
demand for a good which is an input into the production of another good// demand for a good or factor of production, wanted not for its own sake, but as a consequence of the demand for something else
merit good
a good which when consumed leads to benefits which other people enjoy, or a good for which the long-term benefit of consumption exceeds the short-term benefit enjoyed by the person consuming the merit good. Whether a good should be regarded as a merit good, depends on the value judgements being made.
short-run production
occurs when a firm adds variable factors of production to fixed factors of production
long-run production
occurs when a firm changes the scale of all the factors of production
productivity
output per unit of input
labour productivity
output per worker
Capital productivity
Output per unit of capital
Productivity growth
the difference between labour productivity in the UK and in other developed economies
specialisation
a worker only performing one task or a narrow range of tasks. Also, different firms specialising in producing different goods or services.
division of labour
this concept goes hand in hand with specialisation. different workers perform different tasks in the course of producing a good or service
trade
the buying and selling of goods and services
exchange
to give something in return for something else received. money is a medium of exchange
short run
the time period in which at least one factor of production is fixed and cannot be varied
long run
the time period in which no factors of production are fixed and in which all the factors of production can be varied
fixed cost
cost of production which, in the short run, does not change with output
variable cost
cost of production which changes with the amount that is produced, even in the short run
total cost
the whole cost (fixed cost plus variable cost) of producing a particular level of output
average cost
total cost of production divided by output
long-run average cost
long-run total cost divided by output
economy of scale
as output increases, long-run average cost falls
diseconomy of scale
as output increases, long-run average cost rises
technical economy of scale
a cost saving generated through changes to the ‘productive process’ as the scale of production and level of output increase
internal economy of scale
cost saving resulting from the growth of the firm itself
external economy of scale
cost saving resulting from the growth of the industry or market of which the firm is a part
total revenue
all the money received by a firm from selling its total output
average revenue
total revenue divided by output; in a single-product firm, average revenue equals the price of the product
profit
the difference between total sales revenue and total cost of production
market structure
the organisation of a market in terms of the number of firms in the market and the ways in which they behave
price taker
a firm which passively accepts the ruling market price set by market conditions outside its control
price maker
a firm possessing the power to set the price within the market
perfect competition
a market that displays the six conditions of: a large number of buyers and sellers; perfect market information; the ability to buy or sell as much as is desired at the ruling market price; the inability of an individual buyer or seller to influence the market price; a uniform or homogeneous product; and no barriers to entry or exit in the long run
competitive market
a market in which firms strive to outdo their rivals, but it does not necessarily meet all the conditions of perfect competition
concentrated market
a market containing very few firms, in the extreme only one firm
pure monopoly
when there is only one firm in the market
monopoly power
the power of a firm to act as a price maker rather than as a price taker// the ability of a monopoly to raise and maintain price above the level that would prevail under perfect competition. Market power can also be exercised, usually to a lesser degree, by firms in oligopoly and monopolistic competition
imperfect competition
any market structure lying between the extremes of perfect competition and pure monopoly
profit maximisation
occurs when a firm’s total sales revenue is furthest above total cost of production
sales maximisation
occurs when sales revenue is maximised