PED Flashcards
What is PED?
PED measures how much quantity demanded will respond to a change in price..
What is the equation for PED?
PED= %change in QD / %change in price
What will happen to PED if price goes down?
PED will be negative which means QD will increase and be positive
What will happen to PED if price goes up?
PED will be positive which means QD will decrease and be negative
When is demand elastic?
Demand is elastic when PED is equal to any number from -1 to -infinity.
Demand is elastic when %change QD > %change P
When is demand inelastic?
Demand is inelastic when PED is between -1 and 0. This means that consumers are unresponsive to changes in price
When is demand unitary elastic?
Demand is unitary elastic when PED equals to -1 exactly. So %change QD is the same as %change P, where a change in price leads to the same change in QD
When is demand perfectly inelastic?
Demand is perfectly inelastic when PED=0
When is demand perfectly elastic?
Demand is perfectly elastic when PED = -infinity, which means consumers will respond more to changes in price.
What factors influence PED?
1) Necessity
2)Addiction and habits
3)Availability of substitutes
4)Brand Loyalty
5)Proportion of income
6)Time Period
What is a necessity
Necessity means that we need the good in order to live our lives.
Luxury definition
Luxury means we don’t need it to live our everyday life, but it is nice to have if a consumer can afford it.