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Econ Mid Term
Econ Mid Term Ch. 1-6
44
Economics
Undergraduate 1
10/07/2007

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Term
Scarcity
Definition
The inability to satisfy all our wants
Term
Factors of Productions
Definition
Land, labor, capital (human), entrepreneurship
Term
Production Possibility Frontier
Definition
The boundary between those combinations of goods and services that can be produced and those that can not
Term
Marginal Cost
Definition
The Opportunity cost of producting one more unit, increases as we move along the PPF
- MC > MB - overproduction (cost of producing next unit is greater than MB)
Term
Marginal Benefit
Definition
The benefit received from consuming one more unit, decreasing
- MB > MC - underproduction
Term
Opportunity Cost
Definition
The highest-valued alternative that we give up to get something else, always INCREASING
Term
Competitive Market
Definition
Market that has so many buyers and sellers that no single buyer/seller can influence the prince
Term
Law of Demand
Definition
The higher the price of the good, the smaller the quanity demanded
- inverse relationship between price and quanity demanded
Term
Substituion/Income effect
Definition
- Substitution- as price rises (opp cost) people buy more of its substitute

- Income - as price rises, consumer can not afford product so stops buying (no actual change in income)
Term
Factors that influence the demand curve
Definition
- Price of related goods
- Expected future prices
- Income
- Expected fucture income
- Population
- Prefernces
Term
Demand/Quantity Demanded
Definition
- Change in demand: SHIFTS the curve, affected by all factors other than price
- Change in QUANTITY demand: moves along the curve, affected by price
Term
Demand of a Subsititue
Definition
Sub - good that can be used in place of another, if price rises of sub, SHIFTS demand curve to the right
Term
Demand of a Complement
Definition
Comp - good used with another good
- price falls of comp, demand SHIFTS to the right of both good (bc demand increased)
Term
Demand of a Normal Good
Definition
Demand increases as income increases
Term
Demand of an Inerior Good
Definition
Demand decreases as income increases
Term
Law of Supply
Definition
The higher the price of a good, the greater quanity supplied
Term
Factors Influencing Supply
Definition
- Prices of resources used to produce the good
- Prices of related goods
- Expected future prices
- Number of suppliers
- Change in technology
Term
Supplied/Quanity Supplied
Definition
Quanity - Movement along the curve
Supplied - SHIFT of the curve (need a change in the COST to produce to shift the curve)
Term
Surplus
Definition
Excess supply
- demand increases forcing prices down
Term
Shortage
Definition
inadequate supply
- forces prices up
Term
Effects of demand shifts
Definition
- Increase: both price and demand increase
- Decrease: both price and demand decrease
Term
Effects of Supply Shifts
Definition
- Increase: quanity increases, price falls
- Decrease: quanity decreases, price rises
Term
Price Elasticity of Demand
Definition
Measure of the responsiveness of the quanity demanded of a good to a change in its price
= % change in QD/ % change in price
Term
Elastic vs. Inelastic
Definition
> 1 elastic
0 - 1 inelastic
= 1 unit elastic
= infinity perfectly elastic
= 0 perfectly inelastic
Term
Total Revenue Test
Definition
= P * Q
- price and quanity move in opp. directions
- elastic: price down- TR up
- inelastic: price down - TR down
- unit elastic: price down - TR same
Term
Factors Influencing Price Elasticity of Demand
Definition
- more substitutes; more elastic
- more income spent; more elastic
- smaller market; more subs; more elastic
- more time; more elastic
Term
Elasticity on a straight line demand curve
Definition
- Above midpoint; elastic
- Below midpoint; inelastic
- At midpoint; unit elastic
Term
Cross Price Elasticity of Demand
Definition
Measure of responsiveness of the demand of one good to the change in price of a substitute or complement
= %D in QD1/ %D in P2

+ for substitue
- for complement
Term
Income elasticity
Definition
Measure of responsiveness of a good to a change in income
= %D in QD / %D in income

> 1; normal, income elastic
0 - 1; normal, income inelastic
< 0; inferior
Term
Price Elasticity of Supply
Definition
Measure of responsiveness of the quantity supplied to change in price of a good
= %D in QS / %D in Price

>1; elastic
0 - 1; inelalstic
Term
Perfectly elastic/inelastic supply
Definition
infinity - perfectly elastic
0 - perfectly inelastic
Term
Factors Influencing Price Elasticity of Supply
Definition
- More resource substitution; more elastic
- Greater amount of time; more elastic
(momentary supply = perf inelastic)
Term
consumer surplus
Definition
value of a good minus the price paid for it, summed over the qty bought
Term
producer surplus
Definition
price of a good minus the opportunity cost of producing it, summed over the qty sold
Term
price ceiling
Definition
regulation that makes it illegal to charge a price above a specified level
Term
price floor
Definition
regulation that makes it illegal to pay a price below a specified level
-minimum wage
Term
taxes
Definition
-increase prices paid by buyers
-lowers the prices received by sellers
Term
subsidies
Definition
payments by the gov't to producers
-decreases the prices paid by buyers
-increases the prices received by sellers
Term
quotas
Definition
limits to the qty that a firm is permitted to produce
Term
deadweight loss
Definition
decrease in consumer surplus and producer surplus that results from producing an inefficient qty of the good
Term
tax incidence
Definition
division of the burden of a tax between the buyer and the seller
Term
(tax division and elasticity of demand)
...who pays? buyers or sellers?
-perfectly inelastic
-perfectly elastic demand
Definition
-buyers pay
-sellers pay
Term
(tax division and elasticity of supply)
... who pays? buyers or sellers?
-perfectly inelastic supply
-perfectly elastic supply
Definition
-sellers pay
-buyers pay
Term
black market
Definition
illegal tading arrangement in which the price exceeds the legally imposed price ceiling
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