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Microeconomics Overview and Key Concepts

Apr 25, 2025

ACDC Econ Summary Video - Microeconomics Overview

Introduction

  • Host: Jacob Clifford
  • Purpose: Review for AP or college introductory microeconomics
  • Video aids in identifying areas needing more study
  • Promotion of "Ultimate Review Pack"

Basic Economic Concepts

Scarcity and Opportunity Costs

  • Scarcity: Unlimited wants, limited resources
  • Opportunity Costs: Cost of foregone alternatives

Production Possibilities Curve (PPC)

  • PPC Graph: Efficient, inefficient, and impossible points
  • Constant Opportunity Cost: Straight line PPC
  • Increasing Opportunity Cost: Bowed-out curve
  • Shifts in PPC: More/less resources, technology, trade

Comparative Advantage

  • Specialize in goods with lower opportunity cost
  • Absolute Advantage: Higher production capacity
  • Comparative Advantage: Calculations required
  • Terms of Trade: Beneficial exchange rates

Economic Systems

  • Free Market: Focus on capitalism
  • Command Economy
  • Mixed Economy
  • Circular Flow Model: Businesses, individuals, government

Demand and Supply

Demand

  • Law of Demand: Price increase leads to lower quantity demanded
  • Demand Curve: Downward sloping
  • Effects: Substitution, income, diminishing marginal utility

Supply

  • Law of Supply: Price increase leads to higher quantity supplied
  • Equilibrium: Intersection of demand and supply curves
  • Shifts: Factors driving demand/supply changes

Elasticity

  • Price Elasticity of Demand: Sensitivity of quantity to price changes
  • Elastic vs Inelastic: Different consumer responses
  • Coefficients: Calculation of elasticity
  • Total Revenue Test: Assessing elasticity via revenue changes

Market Efficiency

  • Consumer and Producer Surplus: Benefits to consumers/producers
  • Deadweight Loss: Inefficiencies from price controls

Market Structures

Perfect Competition

  • Characteristics: Many firms, identical products, low barriers
  • Profit Maximization: Produce where MR = MC
  • Efficiency: Productive and allocative efficiency

Monopoly

  • Characteristics: Single firm, high barriers
  • Price Maker: Downward sloping demand
  • Regulation: Unregulated vs socially optimal production

Monopolistic Competition and Oligopoly

  • Monopolistic Competition: Differentiated products, easy entry/exit
  • Oligopoly: Few firms, strategic pricing, game theory

Resource Markets

Labor Market

  • Supply and Demand: Firms demand, individuals supply
  • Derived Demand: Labor demand depends on product demand
  • Minimum Wage: Effects of wage floors

Marginal Analysis

  • MRP and MRC: Marginal revenue and cost of resources
  • Hiring Decisions: Where MRP = MRC

Market Failures

Public Goods

  • Non-rivalry and Non-exclusion: Government provision

Externalities

  • Negative Externalities: Additional costs to society
  • Positive Externalities: Additional social benefits
  • Corrective Measures: Taxes and subsidies

Income Distribution

  • Lorenz Curve and Gini Coefficient: Measuring inequality
  • Types of Taxes: Progressive, regressive, proportional

Conclusion

  • Recommended review of key concepts
  • Encouragement for exam preparation