Chapter 5: Elasticity Flashcards
Elasticity measures
the responsiveness of one variable when there is a change in another variable
increase in price=___________ in quantity demanded= __________ the quantity supplied
decrease;increase
the steepness of the demand curve gives us information about how
responsive the quantity demanded is to change in its price
a flat demand curve is
more responsive, demand is elastic (big decrease in quantity demand)
a steep demand curve is
less responsive, demand is inelastic (small decrease in quantity demand)
Determinants of the price elasticity of demand
availability of substitutes, necessities VS luxuries, time horizon, share of income spent on the good,
a product that has only a few substitutes (ex milk) is
Inelastic
a product that has many substitutes (ex. pepsi) is
Elastic
For important necessities like food, demand is
inelastic
For luxuries, demand is
elastic
a good where in the short run demand is inelastic but in the long run can become elastic ex. gasoline is
Time horizon
how do we calculate price elasticity?
%change in quantity demanded/% change in price
a negative number larger than -1 is
Elastic
a negative number between -1 and 0 is
Inelastic
how do we calculate Total Revenue?
price x quantity