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Cross Elasticity of Demand
Measures the responsiveness of quantity demanded of a good/service given a change of price in another.
XED formula
% change in Quantity demanded of good A/% change in Price in good B
XED figure positive
The two goods are substitutes. It means that if a price of a substitute goes up the quantity demanded of the other goes up too.
XED figure negative
The two goods are complementary. If a complementary good’s price goes up the other’s demand goes down.
XED >1
Demand between the goods is price elastic (strongly related)
XED <1
Demand between the goods is price inelastic (weakly related)
XED = 0
Demand between the good is perfectly price inelastic (no relationship)
XED Graph
Quantity of good A on the horizon and Price of good B on the vertical.
