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ACTUAL INVESTMENT: Investment expenditures that the business sector actual undertakes during a given time period, including both planned investment and any unplanned inventory changes. This is a critical component of Keynesian economics and the analysis of macroeconomic equilibrium, which occurs when actual investment is equal to planned investment. The difference between planned and actual investment is unplanned investment, which is inventory changes caused by a difference between aggregate expenditures and aggregate output. Should actual and planned investment differ, then aggregate expenditures are not equal to aggregate output, and the macroeconomy is not in equilibrium.
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OLIGOPOLY, CONCENTRATION Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.
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GREEN LOGIGUIN
[What's This?]
Today, you are likely to spend a great deal of time surfing the Internet hoping to buy either a how-to book on building remote controlled airplanes or an extra large beach blanket. Be on the lookout for poorly written technical manuals.
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Two and a half gallons of oil are needed to produce one automobile tire.
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"He who hesitates is poor. " -- Mel Brooks, writer, director, comedian
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OECD
Organization for Economic Co-operation and Development
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