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
Describe Elasticity along a demand straight line or curve
Demand is more elastic toward the upper left, demand is more inelastic towards the lower right
Study Graphs from slides
Elasticity graphs with respect to total revenue