Differences in Earningsin the U.S. Today The typical physician earns about $200,000a year. The typical police officer earns about$50,000 a year. The typical farm worker earns about$20,000 a year
The Theory of Consumer Choice The theory of consumer choice addresses the following questions: – Do all demand curves slope downward? – How do wages affect labor supply? – How do interest rates affect household saving?
Interdependence and Trade Consider your typical day: – You wake up to a alarm clock made in Wenzhou – You put on some clothes made of cotton grown in Xinjiang and sewn in factories in Fujian Province
Elasticity… … is a measure of how much buyers and sellers respond to changes in market conditions … allows us to analyze supply and demand with greater precision
Importance of Supply-Demand Analysis A little knowledge goes a long way: Price Control, Taxation and other policies. Market welfare: Normative Analysis International Trade Externality (Market Failure) Market Power (Market Failure) Other markets: Financial Market, Labor Market. Macroeconomics