Google
Sunday 
October 17, 2021 

AmosWEB means Economics with a Touch of Whimsy!

AmosWEBWEB*pediaGLOSS*aramaECON*worldCLASS*portalQUIZ*tasticPED GuideXtra CrediteTutorA*PLS
SPECIAL INTEREST GROUP: A group that has more to gain or lose from some candidate, issue, or policy and thus tries extra hard to ensure that the political system is aware of their preferences. Some special interest groups can be fairly tame, merely voting in elections for their chosen candidate, while others are quite active. The more active ones form political action committees and undertake all forms of lobbying (legal and illegal). The ultimate success of special interest groups arises from the inclination of other people to choose rational ignorance and rational abstention.

Visit the GLOSS*arama


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:

point
elasticity
=∂B
B
÷∂A
A
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.

<= PLASTIC MONEYPOLICY LAGS =>


Recommended Citation:

POINT ELASTICITY, AmosWEB Encyclonomic WEB*pedia, http://www.AmosWEB.com, AmosWEB LLC, 2000-2021. [Accessed: October 17, 2021].


Check Out These Related Terms...

     | arc elasticity | coefficient of elasticity | midpoint elasticity formula | endpoint elasticity formula | point elasticity |


Or For A Little Background...

     | elasticity | price elasticity of demand | price elasticity of supply | income elasticity of demand | cross elasticity of demand |


And For Further Study...

     | elasticity and demand slope | elasticity and supply intercept | demand elasticity and total expenditure | elasticity alternatives | elasticity determinants |


Search Again?

Back to the WEB*pedia


APLS

BEIGE MUNDORTLE
[What's This?]

Today, you are likely to spend a great deal of time lost in your local discount super center hoping to buy either clothing for your kitty cats or a set of luggage without wheels. Be on the lookout for slow moving vehicles with darkened windows.
Your Complete Scope

This isn't me! What am I?

The average length of a "business lunch" is about 36 minutes.
"Do what you feel in your heart to be right for you'll be criticized anyway. You'll be damned if you do and damned if you don't. "

-- Eleanor Roosevelt, first lady

GATS
General Agreement on Trade in Services
A PEDestrian's Guide
Xtra Credit
Tell us what you think about AmosWEB. Like what you see? Have suggestions for improvements? Let us know. Click the User Feedback link.

User Feedback



| AmosWEB | WEB*pedia | GLOSS*arama | ECON*world | CLASS*portal | QUIZ*tastic | PED Guide | Xtra Credit | eTutor | A*PLS |
| About Us | Terms of Use | Privacy Statement |

Thanks for visiting AmosWEB
Copyright ©2000-2021 AmosWEB*LLC
Send comments or questions to: WebMaster