Definitions Flashcards
Economics
Economics is the study of how a society uses its scarce resources to satisfy its wants.
Scarcity
A situation in which resources are not enough to satisfy everybody’s wants.
Opportunity cost
The value of the best alternative given up by a decision to do something else.
Positive statements
Objective statements that can be tested based on empirical or actual evidence.
Normative statements
Subjective statements based on value judgments.
Ceteris paribus
With other things held constant.
Free market
An economic system where decisions are made by individual buyers and sellers who act in their own self interest, where consumers aim to maximise utility while producers aim to maximise profit.
Planned economies
An economic system where economic decisions are made by the state or government.
Production Possibility Curve (PPC)
A PPC shows the combinations of two products that can be produced by an economy with full use of all resources, using the best available production methods.
Free good
A good that does not require scarce resources.
Public good
Non-excludable and non-rivalrous good.
Non-excludable
Costly, impossible for one user to exclude others from using a good.
Non-rivalrous
When one person uses a good, it does not prevent others from using it.
Merit goods
Goods where people do not realise the true personal benefit and have positive externalities.
Demerit goods
Goods which harms the consumer and have negative externalities.
Demand
The quantity that buyers are willing and able to buy at a particular price.
Normal goods
When there is an increase in income, demand for normal goods increases.
Inferior goods
When there is an increase in income, demand for inferior goods decreases.
Supply
The quantity of a good or service that producers are willing and able to supply at a particular price.
Market price
The price at which buyers want to buy the same quantity that sellers want to sell.
Elasticity
The responsiveness of the quantity demanded to a change in price.
Income Elasticity of Demand (YED)
The responsiveness of demand to a change in the real income of consumers.
Positive YED
When income increases, the demand for the good increases.
Negative YED
When income increases, the demand for the good decreases.