YED And PED Flashcards
Luxury goods
Normal goods, demand changes a lot more than income
always a +1, strong correlated
Eg/ +1.09 = luxury goods
Normal goods
Positive correlation
+ % in QD/ + % in Y
Necessities
Normal good
Demand changes less than income
Weak correlation
Eg. +0.2 , fruit, cleaning products, essentials, may upgrade brand but not spend loads of extra income
Inferior goods
Negative correlation between income and QD
Buy less of product as a result of income increase
Eg. -0.5, any with a —
Example of inferior goods
Eg. If there is a -0.2 YED
Might get the bus, cheap, staycation- fall in income may choose to stay at home and take a cheaper holiday ie Butlins
Example of PED Inelastic
Ferrari car, if the price goes up- not much demand change as the people who are buying those sort of cars are already willing to spend that money, s the change is not that stretchy, not elastic so INELASTIC
Example of PED elastic
Soap, if price goes up, people will just choose a different soap brand, they’re stretchy, elastic