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EFFECTIVE DEMAND: The notion that the actual demand for aggregate output in the macroeconomy is based on the actual income or other existing economic conditions and not on income and conditions existing in equilibrium. The idea of effective demand plays a key role in Keynesian economics and how the macroeconomy can have extended periods of unemployment. Effective demand is in direct contrast to the view underlying classical economics that demand is that existing in equilibrium.
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Lesson Contents
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Unit 1: An Overview |
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Unit 2: The Continuum |
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Unit 3: Measurement |
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Unit 4: Determinants |
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Unit 5: Other Measures | |
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Elasticity and Demand
Elasticity is the relative responsiveness of one variable to changes in another variable. Economists find this notion of elasticity quite useful in the study of markets. In this lesson, we examine the basics of demand elasticity, especially the price elasticity of demand. - The first unit of this lesson, An Overview, gets us started with a review of several concepts related to elasticity and demand.
- In the second unit, The Continuum, we take a close look at how the five elasticity alternatives are reflected by demand curves.
- The third unit, Measurement, runs through some numbers for measuring the price elasticity of demand, and how elasticity values related to a straightline demand curve.
- The fourth unit, Determinants, examines how the three determinants of elasticity affect the elasticity coefficient.
- The fifth unit and final unit, Other, closes this lesson by introducing examine three related elasticity measures.
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INJECTIONS Non-consumption expenditures on aggregate production. The three aggregate expenditures grouped under the heading of injections are investment expenditures, government purchases and exports. Injections add to the core circular flow containing consumption, production, and income. The injections-leakages model is a Keynesian economics analysis that combines injections with leakages (saving, taxes, and imports) to identify the equilibrium level of aggregate production and income.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time calling an endless list of 800 numbers looking to buy either a battery-powered, rechargeable vacuum cleaner or a remote controlled World War I bi-plane. Be on the lookout for mail order catalogs with hidden messages.
Your Complete Scope
This isn't me! What am I?
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A half gallon milk jug holds about $50 in pennies.
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"Experience keeps a dear school, but fools will learn in no other. " -- Benjamin Franklin
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SLTX
Sales Tax
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