YED Flashcards
Define income elasticity of Demand (YED)
The responsiveness of quantity demanded to a change in income.
Formula for income elasticity of demand (YED)
% change in quantity demanded/% change in income
What’s normal Goods?
If someone incomes increase, they consume more.
What’s Inferior Goods?
If someone incomes increase, they consume less.
List me two types of Normal Goods?
Necessity and luxury goods
What’s necessity (normal) goods?
Needed by people, so YED is less than 1.
What’s Luxury (normal) goods?
Not a need, so YED is more than 1
Necessity (normal) goods YED graph?
Steep upward sloping linear graph! (Read on pg4)
Luxury (normal) goods YED graph?
Flatter upward sloping linear graph (Read on pg 4)
Inferior Goods (YED) graph
Downward sloping linear graph (Read on pg 4)