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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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LEAKAGES

Non-consumption uses of aggregate income. The three uses of income grouped under the heading of leakages are saving, taxes, and imports. Leakages subtract from the core circular flow containing consumption, production, and income. The injections-leakages model is a Keynesian economics analysis that combines leakages with injections (investment expenditures, government purchases and exports) to identify the equilibrium level of aggregate production and income.

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Today, you are likely to spend a great deal of time at a going out of business sale looking to buy either a T-shirt commemorating yesterday or a pair of handcrafted oven mitts. Be on the lookout for small children selling products door-to-door.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"Try not to become a man of success but rather to become a man of value. "

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