Introduction to Price Elasticity of Demand

This set of vocabulary flashcards covers the introductory concepts of price elasticity of demand, revenue calculations, and consumer responsiveness as discussed in the lecture.

Cover charge

A fee people must pay to enter a bar, which serves as the mechanism by which a performing band is typically paid.

Revenue

The total earnings of a business, calculated by the formula $Price \times Quantity$, or in the case of a band, the cover charge multiplied by the number of people who show up.

Law of Demand

An economic principle stating that if the price of a good or service increases, the quantity demanded for that good or service will decrease.

Responsiveness

The degree to which the quantity demanded of a product changes in reaction to a change in its price.

Own price elasticity of demand

A formal economic measure used to determine consumer responsiveness to price changes.

Inelastic

A state of demand where the quantity demanded changes very little even when there is a large change in price, indicating that consumers are unresponsive.

Elastic

A state of demand where the quantity demanded changes significantly in response to a small change in price, indicating that consumers are responsive.

Price Elasticity of Demand Formula ($E_d$)

The mathematical calculation of elasticity defined as $E_d = \frac{\text{percentage change in quantity demanded}}{\text{percentage change in price}}$ or \frac{\text{\%}\text{\Delta} Q_d}{\text{\%}\text{\Delta} P}.

Schooners

A popular restaurant and bar in Newport News mentioned as an example of a venue where a band might play and collect a cover charge.

Trader Joe's

An American retailer mentioned for its "magic" of generating the highest revenue per square footage despite having no social media presence or advertising.