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Macro vs. Micro

Macro Economy as a whole. Representative topics: level and growth of total output, inflation, employment. Micro Markets considered separately. Representatitive topics: specific labor markets (e.g. market for nurses), oil prices, monopolies. Macro vs. Micro.

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Macro vs. Micro

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  1. Macro Economy as a whole. Representative topics: level and growth of total output, inflation, employment. Micro Markets considered separately. Representatitive topics: specific labor markets (e.g. market for nurses), oil prices, monopolies. Macro vs. Micro

  2. http://www0.gsb.columbia.edu/students/organizations/follies/

  3. Thinking Like an Economist Chapter 1 Week 1

  4. Rationality Assumption People have well-defined goals and try to fulfil them the best they can.

  5. Scarcity Principle No free lunch. Boundless needs and wants.

  6. Concept of Cost • Dollar costs (seen) • Opportunity costs (unseen) • Sunk costs (out of sight—forget about them!)

  7. Cost Benefit Principle An action is taken if marginal benefit exceeds marginal cost.

  8. Space Shuttle Example

  9. Space Shuttle Example

  10. Decision Pitfalls • Measuring costs or benefits proportionally. • Ignoring opportunity costs. • Ignoring sunk costs. • Using average instead of marginal costs and benefits.

  11. Current Statistics U.S. GDP (2005) 12,485,725,000,000 Unemployment 07/06 4.8% Inflation 07/06 4.1% Growth 2005 3.2%

  12. How much compost should you buy?

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