PED Flashcards
what does PED mean
PED measures the responsiveness of quantity demanded given a change in price
PED =
percentage change in quantity demanded over the percentage change in price
when is demand price elastic
when PED is greater than 1
when is demand price inelastic
when PED is smaller than 1
when is demand perfectly inelastic
when PED = 0
when is demand perfectly elastic
when PED = infinite
when is demand unit price elastic
when PED = 1
what is SPLAT
Substitute (number of substitutes, the more substitutes, the more price elastic demand is going to be, vice versa.)
Percentage of income (the greater the percentage of income that a price change takes, the more price elastic the demand is going to be)
Luxury/necessity (luxury has more price elastic demand whilst necessity has more price inelastic demand)
Addictive/ habit forming (if it is addictive, as the price increases, quantity demand will fall but not much, therefore is inelastic)
Time period (short run the demand is inelastic vice versa for long run.)
how to calculate PED
what is the definition of elasticity
refers to a measure of sensitivity of a variable in accordance with another variables change. change in aggregate demand in response to change in price