theme 1 Flashcards
what is price elasticity of demand (PED)
measures how responsive demand is to price change.
calculation for PED
%change in quantity/ %change in price
what is income elasticity of demand (YED)
measure of responsiveness of demand to a change in income
what is demand
number of consumers willing and able to purchase a good/ service at a given price.
demand curves
shows quantity demanded for a good at any given price over a period of time.
- as price decreases, demand increases
- as price increases, demand decreases
what way does curve shift when demand increases
shifts outward (right)
what way does the curve shift when demand decreases
shifts inwards (left)
what is supply
number of goods/ services that producers are willing and able to supply at a given price
supply curve
representation of relationship between quantity supplied and price
what is equilibrium
state of equality/ balance between supply and demand
what is a shortage in the market
where quantity demanded exceeds the quantity supplied
what is a surplus in the market
quantity supplied exceeds quantity demanded
percentage change calculation
new-old / old x100
income elastic
changes in income = big demand change
income inelastic
changes in income = small demand change