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MARGINAL PHYSICAL PRODUCT: The change in the quantity of total product resulting from a unit change in a variable input, keeping all other inputs unchanged. Marginal physical product, usually abbreviated MPP, is found by dividing the change in total product by the change in the variable input. Marginal physical product usually goes by the shorter name marginal product.

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PRICE DISCRIMINATION

The act of selling the same good to different buyers for different prices that are not justified by different production costs. This is practiced by suppliers who have achieved some degree of market control, especially monopoly. Common examples of price discrimination are electricity rates, long-distance telephone charges, movie ticket prices, airplane ticket prices, and assorted child or senior citizen discounts. Price discrimination takes the form of one of three degrees: (1) first degree, in which each price is the maximum price that buyers are willing and able to pay, (2) second degree, in which price is based on the quantity sold, and (3) third degree, in which prices are based on an easily identifiable characteristic of the buyer.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers seeking to buy either a coffee cup commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a rechargeable battery for your cell phone. Be on the lookout for pencil sharpeners with an attitude.
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Rosemary, long associated with remembrance, was worn as wreaths by students in ancient Greece during exams.
"Defeat is not the worst of failures. Not to have tried is the true failure."

-- George E. Woodberry, Author

NIPA
National Income and Product Accounts
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