Economics Chapter 5: Elasticity of Demand

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Questions and Answers

To maximize total revenue, what should Small Town Motel do within the price range of €20 to €60?

  • Keep prices constant
  • Lower its prices
  • Offer discounts on certain days
  • Raise its prices (correct)

In the price range of €60 to €80, how does a change in price affect the total revenue for Small Town Motel?

  • Total revenue fluctuates greatly with price changes
  • Total revenue remains unchanged with price changes (correct)
  • Total revenue increases with a price increase
  • Total revenue decreases with a price decrease

What is the income elasticity of demand for motel rooms when they rent for €40?

  • 4.2
  • 3.0
  • 2.2 (correct)
  • 1.5

Are motel rooms considered normal or inferior goods based on their elasticity?

<p>Normal goods (D)</p> Signup and view all the answers

Why are motel rooms categorized as luxuries rather than necessities?

<p>The income elasticity of demand is high (A)</p> Signup and view all the answers

Which good is expected to have a more elastic supply?

<p>Televisions (B)</p> Signup and view all the answers

Which scenario describes a good with more elastic supply?

<p>Crude oil availability over the next year (A)</p> Signup and view all the answers

When comparing a van Gogh painting and a print of the same painting, which has more elastic supply?

<p>A print of the painting (B)</p> Signup and view all the answers

Which good is expected to have more elastic demand, and why?

<p>A trip to Florida because it is a luxury. (B)</p> Signup and view all the answers

Over a longer time period, why is the demand for an AIDS vaccine expected to be more elastic?

<p>More substitutes may be developed. (C)</p> Signup and view all the answers

Which good has more elastic demand among beer and Budweiser, and why?

<p>Budweiser because it's a narrowly defined market. (B)</p> Signup and view all the answers

Why does aspirin demonstrate more elastic demand than insulin?

<p>There are many substitutes for aspirin but few for insulin. (A)</p> Signup and view all the answers

What is the price elasticity of demand for the Daily Newspaper when calculated using the midpoint method?

<p>0.56 (C)</p> Signup and view all the answers

What is an advantage of using the midpoint method for calculating elasticity?

<p>It yields the same elasticity regardless of the starting price. (B)</p> Signup and view all the answers

If the Daily News wants to maximize total revenue, what should it do regarding its pricing?

<p>Raise the price from €1.00 to €1.50. (A)</p> Signup and view all the answers

Over what price range is the demand for motel rooms considered elastic?

<p>€80 to €120 (A)</p> Signup and view all the answers

Flashcards

Price Elasticity of Demand

A measure of how responsive the quantity demanded of a good is to changes in its price. It is calculated as the percentage change in quantity demanded divided by the percentage change in price.

Elastic Demand

Means that the quantity demanded is relatively sensitive to changes in price. A 1% change in price will lead to a greater than 1% change in quantity demanded.

Inelastic Demand

Means that the quantity demanded is relatively insensitive to changes in price. A 1% change in price will lead to a smaller than 1% change in quantity demanded.

Midpoint Method

The price elasticity of demand is calculated using the midpoint method. This method involves calculating the average of the initial and final prices and quantities demanded for each good.

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Elastic Good

A good for which the price elasticity of demand is greater than 1. This means that a 1% increase in price will lead to a greater than 1% decrease in quantity demanded.

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Inelastic Good

A good for which the price elasticity of demand is less than 1. This means that a 1% increase in price will lead to a smaller than 1% decrease in quantity demanded.

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Total Revenue Maximization

Total revenue is maximized when the price elasticity of demand is equal to 1. This is because at this point, a 1% increase in price will lead to a 1% decrease in quantity demanded, resulting in no change in total revenue.

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Necessity

A good that is considered a necessity, meaning that consumers will continue to buy it even if the price increases. This is because it is essential for daily life and there are few substitutes available.

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Unit Elastic Demand

The price range where a change in price causes a proportional change in quantity demanded, resulting in no change in total revenue.

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Normal Goods

Goods for which demand increases as consumer income increases.

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Inferior Goods

Goods for which demand decreases as consumer income increases.

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Luxury Goods

Goods for which the income elasticity of demand is greater than 1. A change in income leads to a proportionally larger change in demand.

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Price Elasticity of Supply

The responsiveness of the quantity supplied to a change in its price.

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Elastic Supply

A good with a high price elasticity of supply. This means that producers can easily increase production in response to a price increase.

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Inelastic Supply

A good with a low price elasticity of supply. This means that producers cannot easily increase production in response to a price increase.

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Cross-Price Elasticity of Demand

The responsiveness of the quantity demanded of a good to a change in the price of another good.

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Study Notes

Chapter 5: Elasticity of Demand and Supply

  • Elasticity of Demand: Measures the responsiveness of quantity demanded to a change in price.

  • Midpoint Method: Calculates elasticity by averaging the initial and new values for both price and quantity. This method is preferred because it yields the same answer regardless of which price/quantity pair is used.

  • Elastic Demand: Percentage change in quantity demanded is greater than the percentage change in price. Indicates consumers are sensitive to price changes.

  • Inelastic Demand: Percentage change in quantity demanded is less than the percentage change in price. Consumers are not very responsive to price changes.

  • Unit Elastic Demand: Percentage change in quantity demanded is equal to the percentage change in price.

  • Factors that Influence Demand Elasticity: Number of substitutes, proportion of income spent on the good, time horizon.

  • Elasticity and Total Revenue: If demand is elastic, a price increase reduces total revenue; if demand is inelastic, a price increase increases total revenue.

  • Elasticity of Supply: Measures the responsiveness of quantity supplied to a change in price.

  • Elastic Supply: Percentage change in quantity supplied is greater than the percentage change in price. Producers can easily increase quantity supplied in response to price changes.

  • Inelastic Supply: Percentage change in quantity supplied is less than the percentage change in price. Producers cannot easily increase quantity supplied in response to price changes.

  • Unit Elastic Supply: Percentage change in quantity supplied is equal to the percentage change in price.

Income Elasticity

  • Income Elasticity of Demand: Measures the percentage change in quantity demanded for a good/service in response to a percentage change in consumer income. Indicates whether a good/service is normal or inferior.
  • Normal Goods: Income elasticity is positive (higher income leads to higher demand).
  • Inferior Goods: Income elasticity is negative (higher income leads to lower demand).
  • Luxuries: Income elasticity is greater than 1, indicating demand changes proportionally more than income changes.
  • Necessities: Income elasticity is between 0 and 1, indicating demand changes proportionally less than income changes.

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