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OPEN ECONOMY: An economy with a great deal of foreign trade. At the extreme, a completely open economy is one that has no trade barriers. Most of the world's hundred-plus nations are relatively open, but much less than they could be because of a wide assortment of trade restrictions. The more an economy is open, the more dependent it is on happenings around the world.

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MARGINAL REVENUE, MONOPOLISTIC COMPETITION

The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a monopolistically competitive firm receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a monopolistically competitive firm equates marginal revenue and marginal cost.

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APLS

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 pair of leather sandals that won't cause blisters or clothing for your kitty cats. Be on the lookout for pencil sharpeners with an attitude.
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This isn't me! What am I?

The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"Do not let what you cannot do interfere with what you can do. "

-- John Wooden, basketball coach

IGARCH
Integrated Generalized Autoregressive Conditional Heteroskedasticity
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