Economics (8%) Flashcards
perfectly competitive market:
definition
In economic theory, perfect competition occurs when all companies sell identical products, market share does not influence price, companies are able to enter or exit without barriers, buyers have perfect or full information, and companies cannot determine prices.
it must take the market price of its output as given, so it faces a perfectly elastic, horizontal demand curve.
perfectly competitive market:
marginal revenue
the firm’s marginal revenue (MR) and the price of its product are identical.
negatively sloped demand curve: implications
A firm that faces a negatively sloped demand curve, however, must lower its price to sell an additional unit, so its MR is less than price (P).
imperfectly competitive market:
definition
Imperfect competition refers to a market structure where there are multiple sellers and buyers, but they have some degree of control over the price and quantity of goods or services. This means that firms can differentiate their products or manipulate prices to gain an advantage.
Breakeven Point
Occurs when total revenue (TR) equals total cost (TC), meaning price equals average total cost (ATC). The firm covers all its economic costs and earns normal profit.
Shutdown Point
Occurs when price is below average variable cost (AVC). The firm cannot cover its variable costs and should shut down in the short run. In the long run, the firm exits the market if it cannot cover total costs.
Economies of Scale
Cost per unit decreases as output increases, resulting in a downward-sloping long-run average cost (LRAC) curve. Achieved through factors like increased returns to scale, specialization, efficient technology, and bulk purchasing.
Diseconomies of Scale
Cost per unit increases as output increases, resulting in an upward-sloping LRAC curve. Caused by factors like management inefficiencies, duplication, and higher resource prices due to supply constraints.
Short-Run Total Cost (STC) Curves
reflect the cost for different plant sizes. Each STC curve has a corresponding short-run average total cost (SATC) curve.
Long-Run Total Cost (LRTC) Curve
An envelope curve derived from the lowest STC for each output level. The LRAC curve is the envelope of all SATC curves, representing economies and diseconomies of scale.
Minimum Efficient Scale
The lowest point on the LRAC curve where the firm operates at least cost per unit.
If an agricultural firm operating in a perfectly competitive market expands its production and unit sales by 10%, what is the most likely result?
Answer: a 10% increase in total revenue.
The marginal revenue per unit sold for a firm under perfect competition will most likely be:
Answer: equal to average revenue.
Market Structure:
Perfect Competition:
Characteristics
Many sellers and buyers.
Homogeneous products.
No single producer can influence the market price.
Firms are price takers.
Very low barriers to entry and exit.
No non-price competition.
Market Structure:
Perfect Competition:
Example
Example: Agricultural products like wheat or corn.
Market Structure:
Perfect Competition:
Impact on Profit
Firms earn normal profit in the long run as profits are driven down by competition.
Market Structure:
Monopolistic Competition:
Characteristics
Characteristics:
Many sellers.
Differentiated products.
Some degree of pricing power.
Low barriers to entry and exit.
Significant non-price competition (e.g., advertising).
Market Structure:
Monopolistic Competition:
Example
Bottled Drinks
Market Structure:
Monopolistic Competition:
Impact on Profit
Firms can earn some economic profit in the short run, but in the long run, profits are competed away.
Market Structure:
Oligopoly:
Characteristics
Characteristics:
Few large sellers.
Products can be homogeneous or differentiated.
Significant barriers to entry.
Some or considerable pricing power.
Non-price competition (e.g., advertising, product differentiation).
Market Structure:
Oligopoly:
Examples
Commercial airlines, automobile manufacturers.
Market Structure:
Monopolistic Competition:
Impact on Pricing
Firms’ pricing and output decisions are interdependent, leading to strategic behavior and potential for collusion.
Market Structure:
Monopoly:
Characteristics
Characteristics:
Single seller.
Unique product with no close substitutes.
Very high barriers to entry.
Considerable pricing power.
Some non-price competition (e.g., advertising).
Market Structure:
Monopoly:
Example
Local utility companies.