Chapter 6 (6.0-6.2) Flashcards
Elasticity
measure of the responsiveness of how quantity responds with price
Elastic demand
Qd responds strongly to a change in price
Inelastic demand
Qd responds weakly to a change in price
- Ed equation (percentage)
Ed=percentage change in quantity demanded of product x/ percentage change in price of product x
- Ed equation (midpoint)
Ed= (change in quantity divided by (the sum of original and new quantity)/2) divided by (the change in price
divided the sum of the new and original price)/2)
price elasticity of demand formula pros: (4)
uses percentages, unit free measure, COMPARE RESPONSIVENESS ACROSS PRODUCT, no minus sign
Ed>1
elastic %change in Qd is > %change in P
Ed=1
unit elastic %change in Qd= %change in P
Ed<1
inelastic. %change in Qd is < %change in P
Perfectly elastic graph with quantity on X and price on Y and what does it equals
horizontal line on graph = oo
perfectly inelastic graph with price on Y and quantity on X and what does it equal
vertical line on graph equals zero
Total Revenue
TR=PxQ
TR changes in the opposite direction as price, demand is:
Elastic P-decrease TR-Increases
TR changes in same direction as price, demand is:
Inelastic P-decreases TR-decreases
TR does not change when price changes demand is:
Unit Elastic P-decreases TR-unchanged