3 PED/YED; ATL/BTL Marketing; Segmentation, Targeting & Positioning Flashcards
Definition of PED
the correlation between price and the quantity demanded
PED Equation
% change in quantity demanded / % change in price (usually a negative figure)
PED > 1
price elastic
demand change > price change
demand is responsive to price changes
PED < 1
price inelastic
demand change < price change
demand is unresponsive to price changes
PED = 1
unitary elasticity
demand changes same as price changes
Why is PED usually a negative figure?
when the price increases, demand falls
when price falls, demand increases
opposite and negative relationship
Examples of price inelastic goods
necessities
heavily branded products
USP (added value/differentiated)
patent or trademarked goods
expensive/difficult to switch supplier
Examples of price elastic goods
luxury goods
more (cheaper) substitutes available
over time - convenience
YED Definition
the responsiveness of demand to a change in income
YED Equation
% change in quantity demanded / % change in customer income
Why is YED usually a positive figure?
when income rises, people buy more and revenue rises
YED > 1
income elastic
demand changes by a more significant amount with an income change - consumers buy more luxury goods as they become wealthier
demand is responsive to a change in income
YED < 1
income inelastic
demand is unresponsive to change in income
usually includes necessities such as basic foods/fuel
YED = 1
unitary income elasticity
consumer income change is cancelled out by demand changes
What type of goods have a negative YED?
Inferior goods - increase in income decreases quantity demanded
What type of goods have a positive YED?
Normal (& luxury) goods - increase in income increases quantity demanded.