Study Notes
Efficiency in economics is about using scarce resources optimally to satisfy infinite wants. Productive Efficiency — occurs when goods and services are produced at the lowest possible cost. Example: A firm operating at the lowest point on its average cost curve. Allocative Efficiency — happens when resources are allocated to produce the mix of goods and services most desired by consumers. Example: The price of a product equals its marginal cost. Dynamic Efficiency — involves reallocating resources over time to increase output relative to resource input. Example: Firms investing in new technologies to lower costs in the long run. Market Failure — occurs when free markets do not achieve productive or allocative efficiency. Example: Externalities or monopoly power leading to inefficient resource allocation.
Exam Tips
Key Definitions to Remember
- Productive Efficiency: Lowest cost production
- Allocative Efficiency: Price equals marginal cost
- Dynamic Efficiency: Long-term resource reallocation
- Market Failure: Inefficient resource allocation
Common Confusions
- Confusing productive efficiency with allocative efficiency
- Misunderstanding dynamic efficiency as short-term
Typical Exam Questions
- What is productive efficiency? It is when goods are produced at the lowest possible cost.
- How does allocative efficiency occur in a market? When the price of a product equals its marginal cost.
- What leads to market failure? Externalities, information failure, and monopoly power.
What Examiners Usually Test
- Differences between types of efficiency
- Examples of market failure
- Conditions for achieving allocative and productive efficiency