Test on Understanding Economic Elasticity

Question 1: The value of price elasticity of demand remains constant throughout the entire length of a downward-sloping linear demand curve.

A. Ano

B. Ne

Explanation: The study materials state that the price elasticity of demand is not the same throughout the entire length of the demand curve. Demand is price elastic on the upper part of the demand curve and price inelastic in the lower portion.

Question 2: How does understanding Cross Elasticity of Demand (XED) primarily benefit firms in their decision-making?

A. It helps firms to understand the impact of competitors’ pricing strategies on the demand for their own products.

B. It identifies products that are most complementary, enabling firms to introduce pricing structures that generate more revenue.

C. It assists firms in determining the responsiveness of quantity demanded to changes in consumer income.

D. It allows firms to predict how total spending by consumers will change as the price of their own product rises or falls.

Explanation: The study material explicitly states that firms are concerned about the impact of competitors’ pricing strategies and that XED helps identify complementary products to introduce pricing structures that generate more revenue. Options 2 and 3 relate to Income Elasticity of Demand (YED) and Price Elasticity of Demand (PED) respectively, not XED.

Question 3: For a normal good, the income elasticity of demand (YED) is positive and expected to be between 0 and 1.

A. Ano

B. Ne

Explanation: The study materials state that 'For normal goods, the YED is positive and expected to be between 0 and 1.' This directly confirms the statement.

Question 4: Which of the following statements accurately describe a necessity good, according to the provided study materials?

A. Its quantity demanded is unlikely to change significantly when income changes.

B. It is characterized by an Income Elasticity of Demand (YED) that is negative.

C. It is a type of normal good with a YED value likely to be close to zero.

D. A low YED for this type of good suggests that there is no limit to the quantity households will purchase as income increases.

Explanation: A necessity good is a type of normal good for which the quantity demanded is unlikely to change when income changes. The YED is positive but is likely to be close to zero. A low value for the YED indicates that there is a limit to the quantity of these goods that households purchase even when the change in income might seem to be substantial. Therefore, option 1 and 3 are correct, while option 2 incorrectly states a negative YED (it is positive) and option 4 incorrectly suggests no limit to quantity purchased.

Question 5: When the quantity demanded for one product responds more than proportionately to a change in the price of another product, the demand is cross elastic, and the XED value is greater than 1.

A. Ano

B. Ne

Explanation: Demand is cross elastic when the quantity demanded for one product responds more than proportionately to a change in the price of another product. This condition leads to an XED that is greater than 1.