YED and PED Flashcards
Whats the formula PED
% change in quantity demand / % change in price x100
What is a price elasticity of demand
a measure of how responsive demand is to a change in price- always a negative value and has an inverse relationship between price and demand.
where can you gather the info for PED
past market data
what does price elastic and inelastic demand mean for a business?
price ELASTIC demand means that a change in price (best to decrease) will lead to more than proportional change in demand.
price INELASTIC demand means that a change in price will lead to a less than proportional change in demand ( best to increase price).
What does it mean if PED is between 0 and -1
demand is price inelastic and the business should increase price
what does it mean if PED is lesser than -1
demand is price ELASTIC and the business should decrease price
what are the consequences of changing price for price elastic demand?
raising selling price: lose money and less revenue
decrease selling price: increase in demand so therefore increase in revenue
what are the consequences of changing price with inelastic demand
raise selling price: increase in revenue as demand stays the same
decrease selling price: decrease in revenue because demand stays the same
what are 3 factors that affect PED
- availability of substitutes- closer and more available = higher PED
- price of competitor goods
- time- a long period of time allows other firms to produce similar products and customers have more chance of adopting their buying habits
what are 3 factors that influence PED?
- BRANDING ( firms spend time and money building up their brand image, brand loyalty= customers willing to pay more= can raise price as the PED is lower)
- INCOME ( if consumer incomes are higher= issue of price is less important to the consumer= easier to raise price as PED is lower)
- NATURE OF THE GOOD (luxury good= price elastic= demand will be more sensitive to price change , a necessity good= price inelastic= demand will be ,less sensitive to price change)
what is income elasticity of demand (YED)
a measure of the responsiveness of demand to a change in income- can be negative or positive and income and demand move in the same direction or opposite
what is the formula of YED?
% change in quantity demand / % change in income = YED
what is a normal good?
a normal good is when demand for a product increases when income also increases
what is an inferior good?
inferior good is when demand for a products decreases when incomes increase - inferior goods will always have a negative income elasticity of demand (YED)
what is income inelastic ( YED inelastic)
between 1 and -1 (normal good) = demand changes at a lower proportion than the change in income