Economics Vocabulary List One Economics Vocabulary List Two shortage factors of production land labor capital human capital physical capital need want scarcity economics entrepreneur goods services market opportunity costs cost/benefit analysis thinking at the margin economic system centrally planned economy mixed economy free market economy safety net economic transition traditional economy free enterprise system production possibilities curve production possibilities frontier efficiency underutilization law of increasing cost specialization household firm factor market profit product market invisible hand public good externality demand law of demand substitution effect income effect market demand schedule normal good inferior good complementary goods substitute goods elasticity of demand inelastic elastic unitary elastic supply law of supply quantity supplied market supply schedule elasticity of supply total revenue fixed cost variable cost total cost average cost marginal cost marginal revenue operating cost excise tax marginal product of labor subsidy regulation equilibrium disequilibrium shortage surplus price ceiling price floor inventory