elasticity Flashcards
what is elasticity
measures the responsiveness of demand
what is PED
price elasticity of demand
what does PED measure
the extent to which the quantity of a product of demand is affected by the price
what is the formula for PED
percentage change in quantity demanded / percentage change in price
what does it mean if the coefficient of PED is more than 1
it is elastic
Change in demand is more than the change in price
what does it mean if the coefficient of PED is less than 1
inelastic
Change in demand is less than the change in price
what is unitary elasticity
coefficient of 1
Change in demand = change in price
what is perfectly inelastic
coefficient of 0
what does it mean if demand is price inelastic
an increase in price leads to a smaller change into the quantity demanded so revenue will INCREASE
what does it mean if demand is price elastic
an increase in price leads to a bigger change in quantity demanded so revenue will FALL
why is PED important
- PED helps businesses to examine the likely impact of a change in price
- If PED > 1 (price elastic) then a change in price will cause a larger change in demand
- This means overall revenues would increase if the price was reduced
- But overall revenues would decrease if the price was increased
- If PED < 1 (price inelastic) then the opposite would happen
factors affecting PED
- brand strength
- necessity
- habit
- availability of substitutes
- time
what does YED stand for
Income elasticity of demand
what is YED
measures the extent to which the quantity of a product demanded is affected by a change in income
formula
% change in quantity demanded
/ %change in income