Chapter 5 Elasticity

A general concept used to quantify the response in one variable when another variable changes

The ratio of the percentage of change in quantity demanded to the percentage of change in price;

measures the responsiveness of quantity demanded to changes in price.

Demand in which quantity demanded does not respond at all to a change in price.

Demand in which quantity drops to zero at the slightest increase in price

A demand relationship in which the percentage change in quantity demanded is larger than the percentage change in price in absolute value (A demand elasticity with an absolute value greater than 1).

Demand that responds somewhat, bit not a great deal, to changes in price.

Always has a numerical value between zero and -1.

A demand relationship in which the percentage change in quantity of a product demanded is the same as the percentage change in price in absolute value (a demand elasticity of -1).

A more precise way of calculating percentages using the value halfway between P1 and P2 for the base in calculating the percentage change in price and the value halfway between Q1 and Q2 as the base for calculating the percentage change in quantity demanded.

A measure of the responsiveness of demand to changes in income

A measure of the response of the quantity of one good demanded to a change in the price of another good.

A measure of the response of quantity of a good supplied to a change in price of that good. Likely to be positive in output markets.

A measure of the response of labor supplied to a change in the price of labor.