Topics 4 questions from before HW#1 Unemployment Natural rate of unemployment reasons for unemployment Frictional unemployment Wait unemployment Patterns of unemployment

Topics Finish the assignment from last class Clarification for 4 questions from last class Demand for goods and services Equilibrium and the interest rate

The Data of macroeconomics * Measure of economic activity Gross Domestic Product(GDP) Total expenditure on domestically-produced final goods and services Total income earned by domestically located factors of production

Money Supply 100%-reserve banking Fractional-reserve banking

Investment Business fixed investment Equipment and structures that businesses buy to use in production Residential investment New housing that people buy to live in and that landlords buy to rent out Inventory investment Goods that business put aside in storage, including materials and supplies, work in process, and finished goods

Microeconomics behind Macroeconomics Consumption Investment Money and Advances in business cycle model

Interest-Rate Differentials Country risk&ex -rate- expectations Country risk Political upheaval default on loan repayments higher i-rate to compensate Ex-rate expectations expect RMB to appreciate loans in RMB can pay a lower i-rate

The Open Economy in the SR The Mundell-Fleming Model Model under floating ex-rate Model under fixed ex-rate Interest-rate- differentials Debate over floating v.s. fixed ex-rate Mundell-Fleming model with changing price level Model in large open economy

Effects of Policies on Real Ex--rate 1. Home fiscal policy (expansionary) →S→(S-)↓ → Domestic currency invested abroad↓ Domestic currency appreciates → Nominal ex--rate↑ → Real ex--rate↑(if prices do not change) Domestic goods become more expensive → Exports↓& imports↑

The Open Economy Why do countries trade with each other? \No nation was ever ruined by trade.\ -- Benjamin Franklin More varieties; higher quality; cheaper price