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MARGINAL REVENUE: The change in total revenue resulting from a change in the quantity of output sold. For a perfectly competitive firm, marginal revenue is equal to price.

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Lesson 2: Economic Science | Unit 2: Theory Page: 5 of 20

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Here are three notable aspects of scientific theories:
  • Universal: Theories are best if they apply to a wide variety of events. The scientific method is the process of identifying general principles that eliminate exceptions.
  • World View: Theories typically build upon a world view as part of their general body of principles.
    • Verified Principles. These are confirmed through the process of hypotheses testing.
    • Unverifiable Axioms. These are beliefs that are not directly testable against real world data. These are accepted on faith.
  • Political: The world view reflected in an economic theory is usually associated with a political philosophy.

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INVESTMENT

The sacrifice of current benefits or rewards to pursue an activity with expectations of greater future benefits or rewards. Investment is the mechanism used to increase the economy's production capabilities and generate economic growth. Investment is typically used to mean the purchase of capital by business in anticipation of profit, which is termed investment expenditures.

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Today, you are likely to spend a great deal of time strolling through a department store wanting to buy either a T-shirt commemorating the first day of winter or software that won't crash your computer. Be on the lookout for slow moving vehicles with darkened windows.
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
"The secret of getting ahead is getting started. The secret of getting started is breaking your complex, overwhelming tasks into small manageable tasks, and then starting on the first one. "

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