Google
Sunday 
June 21, 2026 

AmosWEB means Economics with a Touch of Whimsy!

AmosWEBWEB*pediaGLOSS*aramaECON*worldCLASS*portalQUIZ*tasticPED GuideXtra CrediteTutorA*PLS
LERNER INDEX: The difference between price (p) and marginal cost (mc) as a fraction of price, that is [p-mc]/p. The Lerner index is usually taken as an indicator of market power because the larger the index, the larger the difference between price and marginal cost, that is, the larger the distance between the price and the competitive price. The Lerner index depends on the elasticity of demand. The Lerner index is also called the price-cost margin.

Visit the GLOSS*arama

Most Viewed (Number) Visit the WEB*pedia

MARKET EFFICIENCY

The notion that a competitive market automatically achieves an efficient allocation of resources by equating demand price with supply price and quantity demanded with quantity supplied. Market efficiency relies on the self-correction process that eliminates shortages or surpluses. It also presumes that the market is competitive and is not subject to market failures.

Complete Entry | Visit the WEB*pedia


APLS

PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time flipping through mail order catalogs seeking to buy either a birthday gift for your father that doesn't look like every other birthday gift for your father or a green fountain pen. Be on the lookout for slow moving vehicles with darkened windows.
Your Complete Scope

This isn't me! What am I?

In the early 1900s around 300 automobile companies operated in the United States.
"Anyone who has never made a mistake has never tried anything new. "

-- Albert Einstein, physicist

CME
Chicago Mercantile Exchange
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 ©2000-2026 AmosWEB*LLC
Send comments or questions to: WebMaster