Model
a simplified representation of a real situation that is used to better understand real-lfe situations.
Ceteris Paribus Assumption
Nothing changes except the factor or factors being studied.
“Other things constant”
“Others things equal”
PPF (Production Possibility frontier)
Illustrates the trade-offs facing an economy that produces only two goods. It shows the opportunity cost of one good to make the other.
Comparative advantage
the opportunity cost of producing the good is lower for that individual than for other people;
a country usually wants to import goods that it has a comparative disadvantage in producing and export goods that it has a comparative advantage in producing
Absolute advantage
if he or she can do it better than other people. DON’T CONFUSE ABSOLUTE WITH COMPARATIVE ADVANTAGE
Circular-Flow Diagram (CFD)
a model that represents the transactions in an economy by flows around a circle; simplest CFD illustrates an economy that contains only two kinds of inhabitants: households and firms.
Positive Analysis
statements that attempt to describe the world as it is (= descriptive analysis)
Normative Analysis
statements about how the world should be
= prescriptive analysis
Efficiency (PPF)
opportunity cost
indicates that doing or making one thing comes at the price of doing or making something else;
On a PPF graph, if the graph slope is straight (no curves) = the opportunity cost is always constant; if slope is curved, then opportunity cost is always different
Economic growth
growing ability of the economy to produce goods and services; in a PPF, it is indicated by a shift rightward
Factors of production
technology
technical means for the productions of goods/services
Gains from trade
mutual gains that individuals can achieve by specializing in doing different things and trading with one another.
income distribution
how the total income created in an economy is allocated between less and highly skilled workers, and the owners of capital and land