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RISK: The possibility of gain or loss. Risk the calculated probability of different events happening, is usually contrasted with uncertainty the possibility that any number of things could happen. For example, uncertainty is the possibility that you could win or lose $100 on the flip of a coin. You don't know which will happen, it could go either way. Risk, in contrast, is the 50 percent chance of winning $100 and the 50 percent chance of losing $100 on the flip of the coin. You know (or think you know) that your probability of winning or losing is 50 percent because the coin has a 50 percent chance of coming up either heads or tails.
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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, 2000-2024. [Accessed: October 30, 2024].
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Today, you are likely to spend a great deal of time at a dollar discount store trying to buy either storage boxes for your computer software CDs or a set of tires. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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The word "fiscal" is derived from a Latin word meaning "moneybag."
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"Anyone who has never made a mistake has never tried anything new. " -- Albert Einstein, physicist
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PSID
Panel Study of Income Dynamics
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