2.9

Market Equilibrium and Efficiency

AP Microeconomics

Market efficiency at equilibrium

Why equilibrium is efficient

Graphing total surplus

Why other quantities are not efficient

Underproduction (Q < Qe)

Overproduction (Q > Qe)

Deadweight loss

Productive efficiency vs. allocative efficiency

The invisible hand

Consumer sovereignty

Primary sources

The Wealth of Nations by Adam Smith (1776)

Key events summary

Vocabulary