ECON 1020 Exam 1 Review: Foundations of Economics, Production, Trade, and Markets

Study Guide - Smart Notes

Tailored notes based on your materials, expanded with key definitions, examples, and context.

What is Economics?

Definition and Scope

Economics is the study of how societies allocate scarce resources to satisfy unlimited wants. It examines the choices individuals, firms, and governments make to manage resources efficiently.

Microeconomics: Focuses on individual agents (households, firms) and markets.
Macroeconomics: Examines the economy as a whole, including aggregate measures like GDP, unemployment, and inflation.

Resources and Factors of Production

Land: Natural resources used in production.
Labor: Human effort, both physical and mental.
Human Capital: Skills, education, and experience of workers.
Capital: Manufactured goods used to produce other goods (e.g., machinery, buildings).
Technology: Knowledge and methods to produce goods and services.
Time: A finite resource affecting production and consumption decisions.

Scarcity and Choice

Scarcity: Limited nature of resources relative to wants.
Prices: Reflect scarcity and help allocate resources.
Opportunity Cost: The value of the next best alternative forgone when making a choice.
Wants vs. Needs: Wants are unlimited; needs are essential for survival.
Efficient Production: Occurs when the value of output exceeds opportunity costs.

Allocation Mechanisms

Command Economy: Central authority makes allocation decisions.
Market Economy: Allocation through voluntary exchange and price signals.
Mixed Economy: Combines elements of command and market systems.
Equity vs. Efficiency: Trade-off between fairness and maximizing output.

Example: Allocation of cookies and milk in a classroom: Command (teacher assigns) vs. Market (students trade).

Economics Tools

Positive vs. Normative Analysis

Positive Economics: Describes and explains economic phenomena ("what is").
Normative Economics: Involves value judgments about what ought to be ("what should be").

Economic Models

Definition: Simplified representations of reality to analyze economic issues.
Assumptions: Models rely on assumptions to focus on key relationships.
Prediction: Used to forecast outcomes under different scenarios.
Testing: Models are evaluated by comparing predictions to real-world data.
Revision: Models are accepted, rejected, or modified based on evidence.

Graphs in Economics

Graphs can be misleading if starting values are extreme or if scales are manipulated to exaggerate changes.

Resource Constraints and Production Possibility Frontier (PPF)

Production Possibility Frontier (PPF)

The PPF shows the maximum attainable combinations of two goods that can be produced with available resources and technology.

Attainable Combinations: Points on or inside the PPF.
Efficient Combinations: Points on the PPF (full use of resources).
Unattainable Combinations: Points outside the PPF (require more resources or better technology).

Opportunity Cost and Specialization

Opportunity Cost: Slope of the PPF; reflects trade-offs between goods.
Specialization: Focusing on production of goods with lowest opportunity cost increases efficiency.
Shape of PPF: Usually bowed outward due to increasing opportunity costs (diminishing returns).

Growth and Shifts in the PPF

Sources of Growth: More resources, improved technology.
Shifts: Outward shift indicates economic growth; movement along the curve shows trade-offs.

Role of Trade

Comparative and Absolute Advantage

Comparative Advantage: Ability to produce a good at a lower opportunity cost than others.
Absolute Advantage: Ability to produce more of a good with the same resources.
Absolute advantage does not guarantee comparative advantage or that a country should produce all goods.
Specialization according to comparative advantage increases total output and allows for beneficial trade.

Trade and the PPF

Specialization and trade allow consumption beyond the PPF.
Trade makes more efficient use of labor and resources.

Shifts in the PPF

Caused by increases in resources, better technology, or economic growth (investment, reduced debt, increased consumption).
Principle of Increasing Opportunity Costs: As production of one good increases, opportunity cost of producing additional units rises.

International Trade

Exports, Imports, and Trade Balances

Exports: Goods and services sold to other countries.
Imports: Goods and services purchased from other countries.
Balance of Trade: Difference between exports and imports of goods.
Balance of Payments: Broader measure including trade, investment, and financial flows.

Trends and Partners

Trade is increasingly important globally; U.S. trades most with Mexico, Canada, and China.
U.S. is a service-based economy; trade in services is significant.

Market Demand and Supply

Market Fundamentals

Market: A place or system where buyers and sellers interact.
Law of Demand: As price falls, quantity demanded rises (ceteris paribus).
Law of Supply: As price rises, quantity supplied increases (ceteris paribus).

Market Curves and Equilibrium

Market Demand Curve: Shows relationship between price and quantity demanded.
Market Supply Curve: Shows relationship between price and quantity supplied.
Equilibrium Price and Quantity: Where demand equals supply.

Shifts in Supply and Demand

Shifts in Supply: Caused by changes in input prices, technology, number of sellers, etc.
Shifts in Demand: Caused by changes in income, tastes, prices of related goods, etc.
Complements: Goods consumed together (e.g., coffee and cream).
Substitutes: Goods used in place of each other (e.g., tea and coffee).
Normal Goods: Demand increases as income rises.
Inferior Goods: Demand decreases as income rises.

Market Dynamics

Excess Supply (Surplus): Quantity supplied exceeds quantity demanded; leads to price decreases.
Excess Demand (Shortage): Quantity demanded exceeds quantity supplied; leads to price increases.
Path to Equilibrium: Market forces adjust prices to eliminate surpluses and shortages.
Forecasting: Predicting how shocks (e.g., policy changes, natural disasters) affect price and quantity.

Key Equations

Opportunity Cost (in PPF context):

Market Equilibrium:

Linear Demand Function:

Linear Supply Function:

Example: If a drought reduces wheat supply, the supply curve shifts left, causing higher prices and lower equilibrium quantity.