chapter 5 elasticity Flashcards
elasticity
measure of how much buyers and sellers respond to changes in market conditions
elasticity
measure of the responsiveness of quantity demanded or quantity supplied to a change in one of its determinants
price elasticity of demand
a measure of how much the quantity demanded of a good responds to a change in the price of that good, computed as the percentage change in quantity demanded divided by the percentage change in price
demand for a good is said to be elastic when
the quantity demanded responds substantially to changes in price. elasticity is greater than one
demand for a good is said to be inelastic when
the quantity demanded responds only slightly to changes in price. elasticity is less than one
what determmines price elasticity of demand
availability of close substitutes, necessities vs. luxuries, definition of the market, time horizon
availability of close subtitutes
goods with close subtitutes tend to have elastic demand. goods without close substitutes tend to have inelastic demand
necessities vs. luxuries
necessities tend to have inelastic demands while luxuries tend to have elastic demand
definition of the market
narrowly defined markets tend to have elastic demand. broadly defined markets tend to have inelastic demand
time horizon
goods tend to have elastic demand over long time horizons and inelastic demand during short time horizons.
total revenue
the amount paid by buyers and received by sellers of
a good, computed as the price of the good times
the quantity sold
income elasticity of demand
measures how the quantity demanded changes as consumer income changes (percentage change in quantity demanded/percentage change in income)
cross price elasticity of demand
measures how the quantity demanded of one good responds to a change in price of another good (percent change in quantity demanded of good one/ percentage change in price of good 2)
price elasticity of supply
measures how much quantity supplied responds to changes in price (percentage change in quantity supplied/ percentage change in price)