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January 17, 2018 

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HERFINDAHL-HIRSHMAN INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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Lesson 1: Economic Basics | Unit 1: Economics Page: 2 of 18

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An understanding of economics also involves:

Scarcity. We have limited resources, but unlimited wants and needs. The study of economics is essentially the study of scarcity.
Opportunity Cost. Using resources for one alternative prevents using them for another. Opportunity cost is the highest valued alternative.
Analysis. Economics is an analytical discipline that answers 'What if...?' questions.

Scarcity dictates that we must answer the three basic questions of allocation are:
  • What? What goods and services will be produced with society's resources?
  • How? How will society's resources be used to produce the goods and services?
  • For whom? Who receives the goods and services produced with society's resources?

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MACROECONOMICS

The branch of economics that studies the entire economy, especially such topics as aggregate production, unemployment, inflation, and business cycles. It can be thought of as the study of the economic forest, as compared to microeconomics, which is study of the economic trees.

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APLS

YELLOW CHIPPEROON
[What's This?]

Today, you are likely to spend a great deal of time watching infomercials looking to buy either a pleather CD case or a how-to book on fine dining. Be on the lookout for pencil sharpeners with an attitude.
Your Complete Scope

This isn't me! What am I?

The average length of a "business lunch" is about 36 minutes.
"Being defeated is only a temporary condition; giving up is what makes it permanent."

-- Marilyn vos Savant, Author

IS-LM
Investment/Saving-Liquidity/Money
A PEDestrian's Guide
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