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 INDEX: A measure of the relative average of a group of items compared to a given base value. Index measures are commonly used in economics to combine and compare diverse measures. One common type of index measure is for prices, such as the Consumer Price Index and the Dow Jones Industrial Average of corporate stock prices. Another noted type of index measure is to track macroeconomic activity, especially the index leading economic indicators. Indexes are usually weighted averages rather than simple arithmetic means that are measured relative to a base value or period. The Consumer Price Index, for example, measures the prices of consumer good, weighted by the quantities purchased. The value of a given period is then stated relative to a base year value, which generates a pure, "unitless" number in the range of 100 (give or take).
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 Lesson 9: Consumer Demand | Unit 2: Total Utility Page: 6 of 22

 Topic: A Measure Of Satisfaction <=PAGE BACK | PAGE NEXT=>

• Total utility is the total satisfaction of wants and needs obtained from the use or consumption of a good and service.

Utility and Demand

• The analysis of demand involves making total-utility comparisons for different quantities of a good.

Utils

• In the real world, utility is not measurable.
• However, in the unreal world of economic instruction, it is convenient to assignment measurement units to utility.

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INJECTIONS-LEAKAGES MODEL

A macroeconomic model that balances non-consumption expenditures on production (injections) and non-consumption uses of income (leakages) that is used to identify the equilibrium level of, and analyze disruptions to, aggregate production and income. The injections-leakages model is based on the principles of Keynesian economics and provides an alternative to the standard aggregate expenditures (Keynesian cross) analysis. The three injections included in the model are investment expenditures, government purchases, and exports. The three leakages included in the model are saving, taxes, and imports. Three variations are the two-sector injections-leakages model (or saving-investment model), three-sector injections-leakages model, and four-sector injections-leakages model.

 PINK FADFLY[What's This?] Today, you are likely to spend a great deal of time waiting for visits from door-to-door solicitors wanting to buy either a large green chalkboard shaped like the state of Maine or a replacement battery for your pocket calculator. Be on the lookout for deranged pelicans.Your Complete Scope
 A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
 "People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. "-- George Allen, U.S. senator