
GOLD STANDARD: Use of gold as the standard for valuing a nation's currency. A gold standard can take at least three different forms, most of which have been part of the American economic landscape. (1) Gold is used as the money in circulation. (2) Gold is used to back up paper money in circulation. This involves the use of something like a gold certificate, such that the number of certificates in circulation is the same as the amount of gold stored someplace like Fort Knox. (3) Gold is used to fix the exchange price of paper currency in circulation. In this case, the currency could, in principle, be exchanged for some predetermined amount of gold. In other words, the price of gold is fixed in terms of dollars.
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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 righthand 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 righthand 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, 20002018. [Accessed: April 20, 2018]. Check Out These Related Terms...       Or For A Little Background...       And For Further Study...      
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