Exploring PES, PED and YED in Economics

What does Price Elasticity of Demand (PED) measure?

• The responsiveness of the quantity supplied to a change in price

• The responsiveness of the quantity demanded to a change in price

• The change in price due to a change in demand

• The change in demand due to a change in supply

Answer explanation

Price Elasticity of Demand (PED) measures how much the quantity demanded of a good responds to a change in its price. Therefore, the correct choice is the responsiveness of the quantity demanded to a change in price.

How is Price Elasticity of Demand (PED) calculated?

Answer explanation

Price Elasticity of Demand (PED) is calculated by dividing the percentage change in quantity demanded by the percentage change in price. Thus, the correct formula is \(\frac{\% \text{ Change in Quantity Demanded}}{\% \text{ Change in Price}}\).

What does a PED value greater than 1 indicate?

• Inelastic Demand

• Elastic Demand

• Unitary Elastic Demand

• Perfectly Inelastic Demand

Answer explanation

A PED value greater than 1 indicates that the quantity demanded is highly responsive to price changes, which is known as Elastic Demand. This means consumers will significantly change their purchasing behavior with price fluctuations.

If a product has inelastic demand, what is the likely PED value?

• Greater than 1

• Less than 1

• Equal to 1

• Equal to 0

Answer explanation

If a product has inelastic demand, it means that the quantity demanded changes less than proportionately to price changes. This results in a price elasticity of demand (PED) value that is less than 1.

What does a PED value of 1 signify?

• Elastic Demand

• Inelastic Demand

• Unitary Elastic Demand

• Perfectly Elastic Demand

Answer explanation

A PED value of 1 indicates unitary elastic demand, meaning that the percentage change in quantity demanded is equal to the percentage change in price. This signifies that total revenue remains constant when the price changes.

Which of the following describes perfectly elastic demand?

• PED = 0

• PED = 1

• PED = ∞

• PED < 1

Answer explanation

Perfectly elastic demand occurs when any price change leads to an infinite change in quantity demanded. This is represented by a price elasticity of demand (PED) equal to infinity (PED = ∞).

If a small change in price leads to a large change in quantity demanded, the demand is:

• Inelastic

• Elastic

• Unitary Elastic

• Perfectly Inelastic

Answer explanation

If a small change in price results in a large change in quantity demanded, it indicates that consumers are very responsive to price changes. This characteristic defines elastic demand, making 'Elastic' the correct choice.

What is the purpose of understanding PED for businesses?

• To determine supply levels

• To understand how price changes affect demand

• To calculate production costs

• To set government policies

Answer explanation

Understanding Price Elasticity of Demand (PED) helps businesses gauge how changes in price influence consumer demand, enabling them to make informed pricing decisions and optimize revenue.

Which of the following is NOT a characteristic of inelastic demand?

• PED < 1

• Consumers are less sensitive to price changes

• A change in price leads to a smaller change in quantity demanded

• PED > 1

Answer explanation

Inelastic demand is characterized by a price elasticity of demand (PED) less than 1 (PED < 1). Therefore, PED > 1 indicates elastic demand, making it the correct choice as it does not describe inelastic demand.

If consumers will only buy at one price, the demand is:

• Perfectly Elastic

• Perfectly Inelastic

• Elastic

• Inelastic

Answer explanation

If consumers will only buy at one price, it indicates that they are highly sensitive to price changes, leading to perfectly elastic demand. This means any price change would result in zero quantity demanded.