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DEMAND AND SUPPLY INCREASE: A simultaneous increase in the willingness and ability of buyers to purchase a good at the existing price, illustrated by a rightward shift of the demand curve, and an increase in the willingness and ability of sellers to sell a good at the existing price, illustrated by a rightward shift of the supply curve. When combined, both shifts result in an increase in equilibrium quantity and an indeterminant change in equilibrium price.

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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.

     See also | elasticity | variable | point elasticity | midpoint formula |


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ARC ELASTICITY, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: November 10, 2025].


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EMPLOYMENT-POPULATION RATIO

The ratio of employed persons to the total civilian noninstitutionalized population 16 years old or older. Also termed the employment rate, the employment-population ratio is used as an alternative to the unemployment rate as an indicator of the utilization of labor resources.

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