AP Microeconomics Quiz: Price Discrimination vs. Single-Price Monopolies

📚 Quick Study Guide: Price Discrimination vs. Single-Price Monopolies

• 🔍 Single-Price Monopoly: A firm that sells all units of its output for the same price. To sell more, it must lower its price on *all* units.
• 💡 Price Discrimination: Selling the same good or service at different prices to different consumers, even though the costs of production are the same.
• ✅ Conditions for Price Discrimination:
  • 🚫 Market Power: The firm must be a price maker (a monopoly, oligopoly, or monopolistically competitive firm).
  • ↔️ Consumer Segmentation: The firm must be able to identify and separate different types of buyers based on their willingness to pay.
  • 🛡️ Prevention of Resale: Buyers cannot easily resell the good or service from one market segment to another.
• 🎯 Types of Price Discrimination:
  • 🥇 First-Degree (Perfect): Charging each customer their maximum willingness to pay. The firm captures all consumer surplus. Output is allocatively efficient ($P=MC$).
  • 🥈 Second-Degree: Charging different prices based on the quantity consumed (e.g., bulk discounts).
  • 🥉 Third-Degree: Charging different prices to different groups of consumers (e.g., student discounts, senior discounts, early bird specials).
• 📊 Key Differences:
  • 📈 Output: A perfect price discriminator produces more output than a single-price monopoly, often closer to the perfectly competitive level (where $P=MC$).
  • 💲 Price: Single-price monopoly charges one price ($P > MR = MC$). Price discriminator charges multiple prices, potentially capturing more revenue.
  • 💰 Profit: Price discriminators typically earn higher profits than single-price monopolies because they capture more consumer surplus.
  • ⚖️ Consumer Surplus: Single-price monopolies leave some consumer surplus. Perfect price discriminators eliminate all consumer surplus.
  • 📉 Deadweight Loss: Single-price monopolies create deadweight loss (underproduction). Perfect price discriminators eliminate deadweight loss (producing at $P=MC$).
• 📝 Formula Reminders:
  • $MR = MC$ for profit maximization (both types).
  • Demand curve is the Average Revenue (AR) curve.

🧠 Practice Quiz

1. Which of the following is a necessary condition for a firm to practice price discrimination?

1. The firm must operate in a perfectly competitive market.
2. Consumers must have identical demand curves.
3. The firm must be able to prevent resale of the product.
4. The government must regulate the firm's pricing.

2. Compared to a single-price monopoly, a perfectly price-discriminating monopoly will:

1. Produce less output and earn less profit.
2. Produce more output and earn more profit.
3. Produce the same output and earn more profit.
4. Produce more output and earn the same profit.

3. A single-price monopolist maximizes profit by producing at the quantity where:

1. Marginal revenue equals marginal cost ($MR = MC$).
2. Price equals marginal cost ($P = MC$).
3. Marginal revenue equals average total cost ($MR = ATC$).
4. Price equals average total cost ($P = ATC$).

4. When a firm practices perfect (first-degree) price discrimination, which of the following is true?

1. Consumer surplus is maximized.
2. Deadweight loss is eliminated.
3. The firm produces less output than a single-price monopoly.
4. Marginal revenue is less than price.

5. Offering student discounts at a movie theater is an example of what type of price discrimination?

1. First-degree price discrimination.
2. Second-degree price discrimination.
3. Third-degree price discrimination.
4. Perfect competition.

6. For a single-price monopoly, the marginal revenue curve lies below the demand curve because:

1. The firm can sell additional units at the same price.
2. The firm must lower the price on all units to sell an additional unit.
3. The firm faces perfectly elastic demand.
4. The firm is a price taker.

7. Which statement accurately describes consumer surplus under a perfectly price-discriminating monopoly?

1. It is equal to the producer surplus.
2. It is maximized, similar to perfect competition.
3. It is completely captured by the monopolist.
4. It is redistributed to the government as taxes.