Micro 2 Flashcards
Normal/superior vs inferior goods
Normal/superior: buy more as income increases
Inferior: buy less as income increases
Substitutes
Good used in place of each other
price of one increases, demand for other increases
Complementary
Used in conjunction with one another
Price increases for one, demand decreases for both
Consumer expectations
Expectations of higher prices in the future lead to increase in current demand
FOMO
which way will increase/decrease in supply/demand shift the curve?
INCREASE:
supply right
demand right
DECREASE:
supply left
demand left
anything that makes production cheaper will shift supply which way?
to the right
S increases
market equilibrium
where supply and demand intersect
only place to satisfy buyers AND sellers
results of:
1. D in S in
2. D de S de
3. D in S de
4. D de S in
- P? Q in
- P? Q de
- P in Q?
- P de Q?
results of price ceilings
Black markets
(below equilibrium price)
results of price floors
surplus
(above equilibrium price)
formula for price elasticity of demand
E = %change Q/%change P
always absolute value!
E>1 means elastic
When E=1 what does that mean
unit elasticity
perfectly elastic demand
-An increase in P results in sales of 0
-horizontal demand curve
perfectly inelastic demand
-change in P has no influence on Q
-vertical demand curve
where on the curve is demand more elastic?
upper left, E>1
middle, E=1
lower right, E<1
Total revenue test
TR = PxQ
Elastic- A decrease in P will increase TR
Inelastic- A decrease in P will decrease TR
Unit elastic- decrease in P will not change TR
determinants of elasticity…
1. substitutes?
2. trade barriers?
3. specificity?
4. prop. of income?
5. luxuries vs necessities?
6. time
- more substitutes=more elastic
- lowering trade barriers increases substitutes= more elastic
- more narrow=more elastic
- lower price= inelastic
- most necessities=inelastic
- elasticity increases over time (develop taste for substitutes)