ECON-200 Lecture Notes - Lecture 2: Opportunity Cost

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21 Jun 2020
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The rule of assumptions: can simplify the complex world, how to decide which assumptions to make. Economic models: diagrams and equations, omit many details, allow us to see what"s truly important, built with assumptions. Model #1: circular flow diagram: visual model of the economy, shows how dollars flow through markets among households and firms (omitting the govt. , markets for goods and services, for factors of production, the financial market. Firms: produce goods and services, use factors of production (inputs) Households: own factors of production (land, labor, and capita, consume goods and services. Firms and households interact: markets for goods and services, firms are sellers while households are buyers, markets for factors of production, firms are buyers while households are sellers. Model #2: production possibilities frontier: combinations of output that the economy could possibly produce, given the available factors of production and production technology. Opportunity cost of producing one good: slope of the ppf.

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