economics 2.1-2.4
ABIZ 0440 Agricultural Economics and Marketing
2.1 Market Efficiency
Instructor: Chad Lawley
Department: Department of Agribusiness and Agricultural Economics
Profit Calculation
Objective of Profit Producers: Maximize profit
Profit Formula:
Total Revenue = Amount received from sales
Total Cost = Amount paid for inputs
Profit = Total Revenue – Total Cost
Revenue Calculation:
Revenue = Price x Quantity
Measuring costs can be subtle and complex.
Costs of Production
Understanding Costs: Cost is what is given up to acquire goods.
Opportunity Cost: All foregone options to acquire an item.
Types of Costs:
Explicit Costs: Direct payments in cash outlays.
Implicit Costs: Non-cash costs, representing lost opportunities.
Example discussion of both types is important.
Cost of Capital as Opportunity Cost
Opportunity cost for financial capital (e.g., $500,000 in farm machinery).
Consideration of what is foregone by owning machinery vs. alternative investments.
Accountants and economists may measure costs differently (e.g., machinery, buildings).
Economic vs Accounting Profit
Economic Profit: Total revenue minus all opportunity costs (explicit and implicit).
Accounting Profit: Total revenue minus explicit costs only.
Importance of considering economic profit in business decisions.
Production and Costs
Cost Incurred by Producers: When buying inputs for production.
Fixed Acreage: Assumes fixed acreage for short run analyses; only variable inputs can change.
Production Function: Relationship between inputs and outputs, leading to diminishing marginal returns.
Diminishing Marginal Product
Adding inputs yields progressively less output.
Excessive fertilizer can decrease yield due to limited other inputs.
Production Function and Total Cost Curve
Graphs: Exhibit relationship between nitrogen application rates and output.
Examples of Production
Planting examples related to return on seed investment indicating increasing but diminishing margins.
Various Measures of Cost
Fixed Costs: Do not vary with output (incurred even with no production).
Variable Costs: Change with output levels.
Average Costs: Calculated across fixed and variable costs based on output quantity.
Shapes of Cost Curves
Changes in average total costs as output increases. Efficient scale defined as the quantity minimizing average total costs.
Economies and Diseconomies of Scale
Economies of Scale: Lower long-run average costs with increased output.
Diseconomies of Scale: Higher long-run average costs with increased output.
Constant Returns to Scale: No change in long-run average costs with increased output.
Long-Run Average Total Cost Curve
Represents average costs over various outputs using graphical representation.
Competitive Market Characteristics
Nature of Competition: Many buyers/sellers, undifferentiated goods.
Price Takers: Producers cannot influence market price; they react to market conditions.
Revenue for Competitive Producers
Revenue equals price times quantity.
Average revenue equal to price indication.
Short Run Shutdown Decisions
Temporary shutdowns do not require variable cost payments but do require fixed cost payments.
Exit from market means no costs need to be paid.
Sunk Costs: Costs that cannot be recovered.
Long Run Firm Exit Decisions
Exit from market when total revenue is less than total cost.
Entry conditions for new producers relate to average total costs.
Profit Measurement for Competitive Firms
Short run profits possible with fixed producers.
Long run adjustments lead to equilibrium in pricing to average total cost.
Producers function at efficient scale in the long run.
Elasticity in Market
Adjustments based on market equilibrium principles implying how prices and quantities react to demand changes.
Economic Surplus
Opportunity Cost
Marginal Opportunity Cost: Additional cost of producing one more unit, typically driven by market conditions.
Low-cost firms are prioritized in production; high-cost firms participate as demand increases.
Producer Surplus
Definition: Amount sellers receive minus variable costs.
Visual representation of producer surplus changes with price fluctuations and new producer entry.
Consumer Surplus
Defined as value to buyers minus the actual price paid, reflecting consumer welfare.
Demand curves representation alongside cost shows welfare indicators.
Total Societal Welfare
Comprising consumer surplus and producer surplus illustrates market efficiency under perfect competition.
Monopoly Overview
Characteristics of Monopolies
Definition: Single seller dominating the market.
Pricing Power: Price maker versus price taker in competitive markets.
Reasons for monopolies: resource ownership, government regulation, and efficiencies in large-scale production.
Monopoly Impact
Monopolies limit outputs to influence higher prices, resulting in reduced consumer surplus and potential total surplus.
Pricing strategies and consumer impact are essential discussions.
Price Discrimination
Charging different consumers different prices based on willingness to pay increases profits.
Key examples include varying pricing strategies employed by sectors such as airlines and publishers.
Monopsony Characteristics
Definition and Impact
Single buyer in the market, often influencing prices paid to sellers.
Examination of monopolistic practices and their economic implications in agriculture.
Oligopoly and Monopolistic Competition
Market Structure Summary
Oligopolies consist of few sellers; monopolistic competition has many firms with slight product differentiation.
Each structure affects pricing, entry, and competition dynamics—with unique economic outcomes.
Producers’ Long-Run Outcomes
Economic profits analyzed over competing firms' entry and exit adjustments.
Conclusion of market efficiencies and comparisons between various competitive structures outlined.