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November 30, 2022 

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HOW?: One of three basic questions of allocation (What? and For Whom? are the other two). Answering the "How?" question of allocation determines how society's limited resources will be combined in the production goods. Do we produce houses with wood or bricks? Do we make cars with automated robots or human labor?

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4-FIRM CONCENTRATION RATIO: The proportion of total output in an industry that's produced by the four largest firms in the industry. This is one of two common concentration ratios. The other is the eight-firm concentration ratio. The four-firm concentration ratio is commonly used to indicate the degree to which an industry is oligopolistic and how market control is held by the four largest firms in the industry.

     See also | concentration ratio | 8-firm concentration ratio | market share | market control | oligopoly | monopolistic competition |


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4-FIRM CONCENTRATION RATIO, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2022. [Accessed: November 30, 2022].


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AVERAGE REVENUE AND MARGINAL REVENUE

A mathematical connection between average revenue and marginal revenue stating that the change in the average revenue depends on a comparison between average revenue and marginal revenue. For perfect competition, with no market control, marginal revenue is equal to average revenue, and average revenue does not change. For monopoly and other firms with market control, marginal revenue is less than average revenue, and average revenue falls.

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APLS

YELLOW CHIPPEROON
[What's This?]

Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a T-shirt commemorating the first day of winter or software that won't crash your computer. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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This isn't me! What am I?

It's estimated that the U.S. economy has about $20 million of counterfeit currency in circulation, less than 0.001 perecent of the total legal currency.
"Consult not your fears, but your hopes and your dreams. Think not about your frustrations, but about your unfulfilled potential. Concern yourself not with what you tried and failed in, but with what it is still possible for you to do. "

-- Pope John XXIII

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