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BENEFIT-COST RATIO: The benefit of an activity per dollar of cost. Benefit-cost ratios (or alternatively cost-benefit ratios) are frequently estimated for many forms of government spending, as well as a growing number of business investments. This technique was originally developed to determine if public investment projects, like dams, public parks, highways, etc., were worth doing. The logic is simple -- If benefits are greater than costs, then the project is worthwhile, if they are less, then it isn't.

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ARC ELASTICITY

The average elasticity for discrete changes in two variables. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of initial and ending values of each variable, rather than initial values. Arc elasticity is generally calculated using the midpoint elasticity formula. The contrast to arc elasticity is point elasticity. For infinitesimally small changes in two variables, arc elasticity is the same as point elasticity.

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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time searching the newspaper want ads seeking to buy either a rechargeable battery for your cell phone or a T-shirt commemorating the 2000 Olympics. Be on the lookout for letters from the Internal Revenue Service.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"Be willing to have it so. Acceptance of what has happened is the first step to overcoming the consequences of any misfortune."

-- William James, Psychologist

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