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AMERICAN FEDERATION OF LABOR: Started as a collection of craft unions in 1886, this is now one half of the umbrella organization for labor unions in the United States (the AFL part of AFL-CIO). As a collection of craft unions, the AFL primarily represented skilled workers in particular occupations. However, it also contained unions representing unskilled industrial workers, which led to a rift among AFL members in 1938 and spawned the formation of the Congress of Industrial Organizations (CIO). This rift was closed in 1955, when both joined together to form the AFL-CIO, which is the primary advocate for workers and labor unions in the United States.
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                           POINT ELASTICITY: The relative responsiveness of a change in one variable (call it B) to an infinitesimally small change in another variable (call it A). The notion of point elasticity typically comes into play when discussing the elasticity at a specific point on a curve. Point elasticity can be calculated in a number of different ways. Sophisticated economists, using sophisticated mathematical techniques (better known as calculus) calculate point elasticity by using derivatives. Derivatives are calculus talk for infinitesimally small changes. The formula for calculating point elasticity using calculus is given as:The symbol that looks like a backward six (∂) is the mathematical notation for a derivative, or infinitesimally small change. The first term on the right-hand side of this formula is the percentage change in variable B and the second term is the percentage change in variable A.Unsophisticated folks can also calculate point elasticity without the use of sophisticated calculus. This is done with the midpoint elasticity formula, presented here: midpoint
elasticity | = | (B2 - B1)
(B2 + B1)/2 | ÷ | (A2 - A1)
(A2 + A1)/2 |
The first term on the right-hand side of the equation is the percentage change in variable B. The second term is the percentage change in variable A. The individual items are interpreted as this: A1 is the initial value of A before any changes, A2 is the ending value after A changes, B1 is the initial value of B before any changes, and B2 is the ending value after B changes.This midpoint elasticity formula actually calculates the average or arc elasticity of the entire line segment. However, it also calculates the point elasticity for the midpoint of a line segment.
Recommended Citation:POINT ELASTICITY, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: December 11, 2025].
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Today, you are likely to spend a great deal of time browsing about a thrift store seeking to buy either a birthday greeting card for your father or a T-shirt commemorating the first day of spring. Be on the lookout for rusty deck screws.
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The first paper notes printed in the United States were in denominations of 1 cent, 5 cents, 25 cents, and 50 cents.
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"There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there. " -- Albert Einstein, physicist
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WPO
Weakly Pareto Optimal
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