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PERSONAL INCOME AND DISPOSABLE INCOME: Personal income (PI) is the total income received by the members of the domestic household sector, which may or may not be earned from productive activities during a given period of time, usually one year. Disposable income (DI) is the total income that can be used by the household sector for either consumption or saving during a given period of time, usually one year. Disposable income is after-tax income that is officially calculated as the difference between personal income and personal tax and nontax payments. In the numbers game, personal tax and nontax payments are about 15% of personal income, which makes disposable personal income about 85% of personal income.

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MARGINAL PHYSICAL PRODUCT

The change in the quantity of total physical 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 physical product by the change in the variable input. Marginal physical product, which more often goes by the name marginal product (MP), is one of two measures derived from total physical product. The other is average physical product.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway seeking to buy either a T-shirt commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or a wall poster commemorating the 2000 Olympics. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
"I love the man who can smile in trouble, who can gather strength from distress and grow brave by reflection. "

-- Thomas Paine, statesman

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