Ch. 9 PERFECT COMPETITION

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EWU – ECON 200 - Introduction to Microeconomics - Briand

Review Topics for Final Exam: Chapters 1-10 + Selected Topics (Chapters 13-14, 16)

Ch. 1 WHAT IS MICROECONOMICS ?

In-class worksheet: Production Possibilities Curve.

HMK1 packet: Ch 1

Economics: Definition

1.

Scarcity

Definition

What would be a free good? Is there any such thing as a free good?

What resources do individuals face a scarcity of?

What resources does society face a scarcity of?

What factors of production are ultimately used in the production of any good or service?

2.

Opportunity Costs

Definition

Different people have different opportunity costs attached to same alternative choices

3.

Production Possibilities Curve (PPC)

What does a PPC show?

How do you read the opportunity cost of producing an additional amount of good X from a production possibilities table or a PPC?

Shape of a PPC: downward sloping curve, straight line versus bowed outward PPC: meaning

Points on/inside/outside the PPC; shifts of the PPC: meaning

Ch. 2&3 DEMAND AND SUPPLY MODEL

In-class worksheets: Supply and Demand Model: (1) Apples/Oranges & Oil/Natural Gas, (2) Coffee

HMK2 packet: Chapters 2-3

1.

Demand Side of The Market a.

Demand and Quantity Demanded

Definitions, difference between the two

graphing a demand curve from a demand schedule

individual demand curve versus market demand curve b.

The Law of Demand

definition

shape of the demand curve

substitution and purchasing power effects c.

Change in Quantity Demanded

movement along the demand curve

reading a change in quantity demanded due to a change in price, off the demand curve

d.

Change in Demand

shifts of the demand curve: interpretation

determinants of demand for good X other than the current price of good X: income (normal versus inferior goods), tastes, prices of related goods and services (substitutes versus complements), expectations of buyers, number of buyers, exchange rate effect

2.

Supply Side of The Market a.

Supply and Quantity Supplied

Definitions, difference between the two

individual supply curve versus market supply curve b.

The Law of Supply

definition

shape of the supply curve

profit motivation of producers c.

Change in Quantity Supplied

movement along the supply curve

reading a change in quantity supplied due to a change in price, off the supply curve d.

Change in Supply

shifts of the supply curve: two interpretations

determinants of supply for good X other than the current price of good X: price of inputs, technology, prices of related goods and services, expectations of producers, number of producers/productive capacity, exchange rate effect

3. Putting Demand and Supply Together a. Market Equilibrium Price and Quantity

definition

how do we get from an out of equilibrium price (above/below equilibrium, i.e. surplus/shortage of quantity) to the market equilibrium price? b. Changes in Market Equilibrium Price and Quantity

due to a change in demand

due to a change in supply

due to a change in both demand and supply

Ch. 4 PRICE ELASTICITY OF DEMAND

In-class worksheets: Price Elasticity & Total Revenue, Elasticity & War on Drug

TEST1 packet: Chapters 1-4

1.

Definition

definition and meaning

elastic, unitary elastic and inelastic demand

price elasticity of demand and shape of the demand curve

determinants of price elasticity

examples of estimated elasticity and meaning

calculating the price elasticity of demand: change of elasticity as one moves up a demand curve

price elasticity

 slope

use of mid-value as a base in calculation of %

P and %

Q

D

2.

Price Elasticity of Demand and Total Expenditure

total expenditure = total revenue

relationship between changes in price, elasticity of demand and change in revenue

more examples on using elasticity of demand: in-class problems

Ch. 5 POLICY ANALYSIS WITH SUPPLY AND DEMAND MODEL

In-class worksheets: The Minimum Wage, Water Bottles vs Doctor Visits, Canadian e.g.

HMK3 packet: Chapter 5

1.

Definition

price floor

price ceiling

2.

Policy Analysis Examples

the minimum wage

the health care services market

Ch. 6 WEALTH CREATION AND DESTRUCTION

In-class worksheet:

HMK4 packet: Chapter 6

1.

Supply and Demand Model and Wealth Creation

Supply curve re-interpreted as a Marginal Cost curve: S = MC

Demand curve re-interpreted as a Marginal Benefit curve: D = MB

Definition of Consumer Surplus

Definition of Producer Surplus

Consumer and Producer Surplus combined

2.

Government Intervention and Wealth Destruction

Definition of Deadweight Loss

Deadweight Loss associated with Price Floor

Deadweight Loss associated with Price Ceiling

Deadweight Loss associated with Taxation

Deadweight Loss associated with Subsidies

3.

Public Goods (Chapter 14)

Characteristics of a pure public good

Example: EWU recreation center

Ch. 7 TRADE

In-class worksheets: Production Possibilities Curve and Gains from Trade, Video

PRACTICE packet: Chapter 7

TEST2 packet: Chapters 5-7

1.

Analysis of Trade using the Production Possibility Curve

Definition of Absolute Advantage

Definition of Comparative Advantage

Specialization and Trade

Gains from Trade

2.

Analysis of Trade using the Supply and Demand Model

Consumer and Producer Surplus in a close economy

Exports and Wealth Creation (Increase in Surplus)

Imports and Wealth Creation (Increase in Surplus)

Deadweight Loss associated with Trade Restriction like Tariffs

Deadweight Loss associated with Trade Restriction like Quotas

Ch. 8 PRODUCTION AND COST

In-class worksheets: (1) Production Function in the Short-Run; (2) Production and Costs in the

Short-Run; (3) Production and Costs in the Long-Run.

HMK5 packet: Chapter 8

1.

Thinking about production

inputs and outputs

short-run versus long-run

2.

Production in the short-run

fixed and variable inputs

in short-run production is first characterized by increasing returns to labor and then diminishing return to labor

TP, MP

L

: meaning, computation, interrelation, curves shape

3.

Costs in the short-run

how production and costs are related to one another

TFC, TVC, TC, AFC, AVC, ATC, MC: meaning, computation, interrelation, curves shape

4.

Costs in the long-run

difference between long-run and short-run

LTRC

TC

Shape of the LRATC

Economies of scale/diseconomies of scale

Ch. 9 PERFECT COMPETITION

In-class worksheet: Profit Maximizing Decision: Perfectly Competitive Firm in the Short-Run, labor hiring decision

HMK6 packet: Chapter 9

1.

Definition of Profit

accounting versus economic profit

relevance of all opportunity costs (implicit + explicit)

2.

Characteristics of The Perfectly Competitive Market structure

buyers and sellers are price takers

easy entry and easy exit in the long-run

others: see textbook

3.

The perfectly competitive firm in the short-run

demand constraint. D=AR=MR=P* (horizontal line at the prevailing market price)

cost constraint. Usual TC, ATC, AVC and MC (see previous chapter)

profit maximizing output level. TR & TC and MR & MC approaches.

profit or loss level: graphs

dealing with losses: shutting down or continuing operating rules

firm short-run supply curve is the firm MC curve above its minimum AVC

4.

Competitive markets in the long-run

firms entry/exit adjustments due to expectation of positive/negative economic profit occur until firms earn zero economic profit

goods are produced at the lowest possible costs/consumers get the goods at the lowest possible price

5.

Labor Market (Chapter 16)

Profit maximizing labor hiring decision, individual firm and market demand for labor

Determinant of demand in the labor market; reservation wage and the supply of labor

Wage differential (i.e.wage gap), and determinants of wage gap

Ch. 10 MONOPOLY

In-class Worksheets: Profit Maximizing Decision: Non-Perfectly Competitive Firm, videos.

PRACTICE packet: Ch 10

TEST3 packet: Chapters 8-10

1.

market structure characteristics

one firm dominating the market

sources of monopoly power

2.

monopoly profit maximization goal and constraints

demand constraint = market demand (cost constraint: usual)

determining profit maximizing level of output and level of profit/loss

3.

more on monopoly

monopolization of market and deadweight loss

price discrimination

SELECTED TOPICS

In-class Worksheets: Utility and Choice, Computer Assisted Instruction, Externalities and Property

Rights

1.

Consumer Choice Theory

The concept of utility and the utility maximizing consumption choice

Indifference curves and budget constraint: utility maximizing consumption choice, graphically

2.

Externalities (Chapter 13)

Externalities and property rights, externalities and the S/D model, ways to correct for externalities

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