Price Elasticity of Demand
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Questions and Answers

What does a price elasticity of demand (PED) value of 0 indicate?

  • Quantity demanded responds significantly to price increases.
  • Quantity demanded is completely unaffected by price changes. (correct)
  • Quantity demanded changes proportionately with price changes.
  • Quantity demanded changes less than proportionately to price changes.

Which of the following factors generally makes demand more elastic?

  • Lack of available substitutes.
  • Necessity of the good.
  • Short time horizon for purchases.
  • High percentage of income spent on the good. (correct)

What happens to total revenue if the demand for a good is elastic (PED > 1) and the price is decreased?

  • Total revenue fluctuates randomly.
  • Total revenue decreases.
  • Total revenue remains unchanged.
  • Total revenue increases. (correct)

Which type of good typically has a price elasticity of demand (PED) greater than 1?

<p>Luxury goods. (B)</p> Signup and view all the answers

What characteristic of a demand curve indicates price inelasticity?

<p>It is steep. (C)</p> Signup and view all the answers

If demand for a good is unitary elastic (PED = 1), what is the relationship between price changes and total revenue?

<p>Total revenue remains constant with price changes. (B)</p> Signup and view all the answers

How does the availability of substitutes affect price elasticity of demand?

<p>It increases the elasticity of demand. (D)</p> Signup and view all the answers

What does perfect price elasticity (PED = ∞) imply about consumer behavior?

<p>Any price increase will result in zero quantity demanded. (D)</p> Signup and view all the answers

What does a steep demand curve indicate about the price elasticity of demand?

<p>Demand is inelastic. (C)</p> Signup and view all the answers

Which scenario best demonstrates perfect price inelasticity?

<p>Life-saving medications remain needed regardless of price changes. (C)</p> Signup and view all the answers

How does the percentage of income spent on a good influence its price elasticity of demand?

<p>Larger income percentages usually mean more inelastic demand. (A)</p> Signup and view all the answers

What happens to total revenue when demand is inelastic (PED < 1) and the price increases?

<p>Total revenue increases. (A)</p> Signup and view all the answers

Which good are consumers likely to view as more elastic?

<p>Luxury vacation packages. (B)</p> Signup and view all the answers

If demand is unitary elastic (PED = 1), what effect does a decrease in price have on total revenue?

<p>Total revenue remains unchanged. (D)</p> Signup and view all the answers

Which of the following factors could lead to increased price elasticity of demand?

<p>Higher time for adjustment to price changes. (B)</p> Signup and view all the answers

A product has a price elasticity of demand (PED) greater than 1. What can be inferred?

<p>Quantity demanded changes more than proportionately to price changes. (B)</p> Signup and view all the answers

Flashcards

Price Elasticity of Demand (PED)

PED measures how responsive quantity demanded is to a price change.

Price Elastic Demand

A small price change leads to a large quantity change.

Price Inelastic Demand

Significant price changes result in little quantity change.

PED = 0

Perfectly inelastic demand; quantity demanded doesn't change with price.

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0 < PED < 1

Inelastic demand: Quantity changes less than proportionately to price changes.

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PED = 1

Unitary elastic demand: Quantity changes proportionally to price changes.

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PED > 1

Elastic demand: Quantity changes more than proportionately to price.

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PED = ∞

Perfectly elastic demand: Any price increase leads to zero quantity demanded.

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Price Elasticity of Demand (PED)

How much quantity demanded changes when price changes.

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Elastic Demand (PED > 1)

Large quantity change with small price change.

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Inelastic Demand (0 < PED < 1)

Small quantity change with large price change.

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Unit Elastic Demand (PED = 1)

Quantity changes proportionally to price.

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Perfectly Inelastic Demand (PED = 0)

Quantity demanded doesn't change with price.

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Perfectly Elastic Demand (PED = ∞)

Any price increase leads to zero demand.

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Total Revenue Effect (PED)

The impact of price changes on total revenue.

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Factors affecting PED

Substitutes, necessity, percentage of income, and time.

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Study Notes

Price Elasticity of Demand (PED)

  • PED measures how quantity demanded of a good changes with price changes.
  • It shows the responsiveness of demand to price fluctuations.

Diagrams for Price Elasticity

  • Price Elastic Demand: A shallow (flatter) demand curve shows a large quantity change for a small price change.
  • Price Inelastic Demand: A steep demand curve indicates little change in quantity demanded despite price changes.

Numerical Values of PED

  • Perfect Price Inelasticity (PED = 0): Quantity demanded is constant, regardless of price (e.g., life-saving medicine).
  • Price Inelastic (0 < PED < 1): Quantity demanded changes less than price changes (e.g., basic necessities).
  • Unitary Price Elasticity (PED = 1): Quantity demanded changes proportionally to price changes.
  • Price Elastic (PED > 1): Quantity demanded changes more than price changes (e.g., luxury goods).
  • Perfect Price Elasticity (PED = ∞): Any price increase results in zero demand (e.g., perfectly competitive markets).

Factors Influencing PED

  • Substitutes: More substitutes mean higher elasticity. Consumers easily switch if prices rise.
  • Degree of Necessity: Necessaries have inelastic demand, luxuries are more elastic.
  • Percentage of Income Spent: Goods that consume a larger portion of income are more elastic.
  • Time: Demand becomes more elastic over time as consumers find more alternatives.

Total Revenue and PED

  • Elastic Demand (PED > 1): Lowering price increases total revenue.
  • Inelastic Demand (PED < 1): Lowering price decreases total revenue.
  • Unitary Elastic Demand (PED = 1): Total revenue doesn't change with price changes.

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Description

This quiz focuses on the concept of Price Elasticity of Demand (PED), exploring how quantity demanded changes in response to price fluctuations. It includes different types of demand elasticity and illustrates their characteristics through diagrams and numerical values. Test your understanding of how elasticity affects consumer behavior and market dynamics.

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