Elasticity
Elasticity is how much a percentage change in quantity demanded or quantity supplied is affected by a percentage change in price.
Definition
According to Principles of Economics by Timothy Taylor (3rd edition),
- Elasticity. How much a percentage change in quantity demanded or quantity supplied is affected by a percentage change in price.
According to Macroeconomics by Mankiw (7th edition),
- Elasticity. The percentage change in a variable caused by a 1-percent change in another variable.