ECO 304K Lecture Notes - Lecture 4: Inferior Good, Demand Curve, Normal Good

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16 Oct 2016

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Total spending (total revenue) = the product of price times quantity. Price goes up but decrease in quantity is small inelastic demand. Price goes up but quantity drops dramatically elastic demand. Elasticity is the responsiveness of quantity demanded to the price. When is demand elastic or inelastic: elastic: Elasticity equals the absolute value of the percent change in quantity demanded over the percent change in price. If elasticity is greater than one, demand is elastic. If elasticity is less than one, demand is inelastic. If elasticity is equal to one, demand is unit elastic. Price goes down and quantity stays the same. If elastic is equal to zero, demand is perfectly inelastic. Is elasticity is infinite, demand is perfectly inelastic. Flatter demand curve means higher elasticity but elasticity does not equal slope. Own price elasticity of demand: percent change in quantity demanded over the percent change in price is less than zero.

Related Questions

interval (or arc) elasticity

cross-price elasticity

price elasticity of demand

elastic demand

income elasticity

inelastic demand

inframarginal units

marginal revenue

point elasticity

price effect

quantity effect

total revenue

unitary elastic demand

1. __________________ A measure of consumersâ sensitivity or responsiveness to changes in the price of a good or service.

2. ___________________ When the percentage change in price (in absolute value) is more than the percentage change in quantity demanded (in absolute value).

3. ___________________ When the percentage change in quantity demanded (in absolute value) is more than the percentage change in price (in absolute value).

4. ___________________ When the percentage change in quantity demanded (in absolute value) is just equal to the percentage change in price (in absolute value).

5. ___________________ Total amount paid to a producer for a good or service P * Q.

6. ___________________ The effect on total revenue of a change in price, holding quantity constant.

7. ___________________ The effect on total revenue of a change in quantity, holding price constant.

8. ___________________ An elasticity calculated over an interval of a demand curve or demand schedule.

9. ___________________ Elasticity at a specific price or point on a demand curve.

10. ___________________ A measure of how responsive quantity demanded is to a change in income, all other things constant.

11. ___________________ A measure showing how responsive the quantity demanded of one good is to changes in the price of another good, other factors constant.

12. ___________________ The additional revenue received by producing and selling one more unit of output.

13. ___________________ Units of output that could have been sold at a higher price had the firm not lowered its price to sell additional (marginal) units.

coffeehornet269

1. Anna owns the Sweet Alps Chocolate store. She charges $10 per pound for her hand made chocolate. You, the economist, have calculated the elasticity of demand for chocolate in her town to be 2.5. If she wants to increase her total revenue, what advice will you give her and why? Explain your answer.

2. If the cross elasticity of demand between peanut butter and milk is -1.11, then are peanut butter and milk substitutes or complements? Explain your answer.

3. A 10 percent increase in income brings about a 15 percent decrease in the demand for a good. What is the income elasticity of demand and is the good a normal good or an inferior good? Explain your answer.

4. If the price of a good increases by 8% and the quantity demanded decreases by 12%, what is the price elasticity of demand? Is it elastic, inelastic or unitary elastic?

5. Discount stores sell relatively elastic goods. Ceteris paribus, explain why selling at a relatively low price is profitable for them?

1. When demand is inelastic, a decrease in price will cause

a. an increase in total revenue.

b. a decrease in total revenue.

c. no change in total revenue but an increase in quantity demanded.

d.no change in total revenue but a decrease in quantity demanded.

2. For which of the following types of goods would the income elasticity of demand be positive and relatively large?

a. all inferior goods

b. all normal goods

c. goods for which there are many complements

d. luxuries

3. Which of the following should be held constant when calculating the income elasticity of demand?