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VERTICAL ADDITION: In graphical analysis, the technique of combining two curves by adding the value of the variable on the vertical or Y axis for a given value of the variable on the horizontal or X axis. This is commonly used for deriving the demand curve for a public good from a set of individual demand curves. The demand price that each individual buyer is willing to pay is added for a given quantity to identify the total benefits obtained.

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MARKET SHARE

The fraction of an industry's total sales or some other activity accounted for by one or more firms in the industry. An individual firm is often concerned with its "share of the market" as an indication of "success." Market share is also key to the analysis of market structure, market control, and industry concentration--especially for oligopoly. It can be used to indicated the degree concentration and market control of one or more firms in an industry. It can be used alone or to calculate concentration ratios and the Herfindahl index.

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time watching the shopping channel seeking to buy either a T-shirt commemorating the first day of spring or a coffee cup commemorating last Friday (you know why). Be on the lookout for the last item on a shelf.
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
"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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