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WHOLESALE PRICE INDEX: An index of the prices paid by retail stores for the products they would ultimately resell to consumers. The Wholesale Price Index, abbreviated WPI, was the forerunner of the modern Producer Price Index (PPI). The WPI was first published in 1902, and was one of the more important economic indicators available to policy makers until it was replaced by the PPI in 1978. The change to Producer Price Index in 1978 reflected, as much as a name change, a change in focus of this index away from the limited wholesaler-to-retailer transaction to encompass all stages of production. While the WPI is no longer available, the family of producer price indexes provides a close counterpart in the Finished Goods Price Index.

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Lesson 9: Macro Basics | Unit 1: The Macroeconomy Page: 2 of 16

Topic: Macroeconomics <=PAGE BACK | PAGE NEXT=>

Macroeconomics is the study of the entire economy, the aggregate economy. Microeconomics is the study of parts of the economy.
  • Economists first studied parts of the economy (markets, demand, supply, and prices), what we now call microeconomics.
  • The Great Depression of 1930's, motivated economists led by John Maynard Keynes, to study macroeconomics.
Microeconomics and macroeconomics have their own principles, theories, and phenomena. Both are part of economics and each is intertwined with the other.
  • The macroeconomy affects microeconomic decisions.
  • Microeconomic decisions affect the macroeconomy.

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AGGREGATE EXPENDITURES

The total expenditures on gross domestic product undertaken in a given time period by the four sectors--household, business, government, and foreign. Expenditures made by each of these sectors are commonly termed consumption expenditures, investment expenditures, government purchases, and net exports. Aggregate expenditures (AE) are a cornerstone in the study of macroeconomics, playing critical roles in Keynesian economics, aggregate market analysis, and to a lesser degree, monetarism. In particular, aggregate expenditures are combined with the price level as aggregate demand.

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Today, you are likely to spend a great deal of time at a dollar discount store hoping to buy either a replacement battery for your pocket calculator or a how-to book on home remodeling. Be on the lookout for strangers with large satchels of used undergarments.
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Lombard Street is London's equivalent of New York's Wall Street.
"The greatest things ever done on Earth have been done little by little. "

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