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PORTFOLIO INVESTMENT: The acquisition of financial assets (which includes stock, bonds, deposits, and currencies) from one country in another country. In contrast to foreign direct investment, which is the acquisition of controlling interest in foreign firms and businesses, portfolio investment is foreign investment into the stock markets. Most economists consider foreign direct investment more useful than portfolio investment since this last one is generally regarded as temporal and can leave the foreign country at the first sign of trouble.

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AVERAGE FACTOR COST AND MARGINAL FACTOR COST

A mathematical connection between average factor cost and marginal factor cost stating that the change in the average factor cost depends on a comparison between average factor cost and marginal factor cost. For perfect competition, with no market control, marginal factor cost is equal to average factor cost, and average factor cost does not change. For monopsony and other firms with market control, marginal factor cost is greater than average factor cost, and average factor cost rises.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time strolling through a department store looking to buy either a computer that can play music and burn CDs or a T-shirt commemorating last Friday (you know why). Be on the lookout for telephone calls from long-lost relatives.
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In the late 1800s and early 1900s, almost 2 million children were employed as factory workers.
"Nothing will ever be attempted if all possible objections must first be overcome. "

-- Samuel Johnson, essayist, critic, lexicographer

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Autoregressive Conditional Heteroskedasticity
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