Elastic Demand: Demand is considered elastic when the quantity demanded changes proportionately more than the change in price. Consumers are highly responsive to price changes for these goods.
Inelastic Demand: Demand is considered inelastic when the quantity demanded changes proportionately less than the change in price. Consumers are less responsive to price changes for these goods.
Unit Elastic Demand: Demand is considered unit elastic when the percentage change in quantity demanded is equal to the percentage change in price. Consumers' responsiveness to price changes is unitary.