Micro 2 Flashcards
Price elasticity of demand (PED)
The responsiveness of a demand to a change in price.
Price elasticity of supply (PES)
The responsiveness of supply to a change in price
Perfectly Price elastic good
PED/PES= Infinity
Price elastic good
PED/PES> 1
Unitary Price elastic good
PED/PES= 1
Price inelastic good
PED/PES< 1
Perfectly Price inelastic good
PED/PES= 0
Cross Elasticity of demand (XED)
The responsiveness of demand for one good to a change in price of another good
Substitute good
Positive XED; if good B becomes more expensive, demand for good A rises
Complementary good
Negative XED; if good B becomes more expensive, demand for good A falls
Income elasticity of demand (YED)
The responsiveness of demand to a change in income
Luxury good
YED> 1; an increase in incomes causes an even bigger increase in demand
Inferior good
YED< 0; goods which see a fall in demand as income increases
Normal good
YED> 0; demand increases as income increases