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SERVICES, CONSUMPTION: Personal consumption expenditures on activities that provide direct satisfaction of wants and needs without the production of tangible goods. Common examples are information, entertainment, and education. This is one of three categories of personal consumption expenditures in the National Income and Product Accounts maintained by the Bureau of Economic Analysis. The other two are durable goods (see durable goods, consumption) and nondurable goods (see nondurable goods, consumption). Services are about 60% of personal consumption expenditures and 40% of gross domestic product.

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TOTAL VARIABLE COST AND TOTAL PRODUCT

Because variable cost is largely associated with the cost of employing at least one variable input in the short run, the total variable cost curve can be derived from the total product curve. This admittedly simplistic connection between total product and total variable cost is designed to illustrate the fundamental role that the law of diminishing marginal returns plays in the slope and shape of the total variable cost curve. Because he slope of the total variable cost curve, which is also the slope of the total cost curve, is marginal cost, this analysis also indicates how the law of diminishing marginal returns relates to marginal cost.

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Today, you are likely to spend a great deal of time watching infomercials wanting to buy either a birthday gift for your mother or a weathervane with a horse on top. Be on the lookout for small children selling products door-to-door.
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This isn't me! What am I?

The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
"Life is no brief candle to me. It is a sort of splendid torch which I have got a hold of for the moment, and I want to make it burn as brightly as possible before handing it on to future generations."

-- George Bernard Shaw

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Nonlinear Statistical Regression
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