ECON 110 Chapter Notes - Chapter 3: Demand Curve, Ceteris Paribus, Inferior Good

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Quantity demanded: the amount of a good or service consumers want to purchase during some time period: takes into account factors such as price of the product, other product"s prices, income, and tastes. If sufficient quantities are not available, the amount consumers want may exceed the amount purchased: quantity bought (exchanged) refers to actual purchases. Quantity demanded refers to flow of purchases: a flow variable has a time dimension, a stock variable has value at a point in time. The quantity demanded at a given time is influenced by: product"s own price, consumers" income, prices of other products, tastes, population, expectations about the future. To examine demand all variables are held constant (ceteris paribus) Economists study the relationship between quantity demanded and the product"s price. A basic economic hypothesis is that the price of a product and quantity demanded are negatively related. Demand schedule: table showing quantity demanded vs. the price of a commodity.

Related Questions

When demand for a good is very elastic, revenue ________ when the price falls.

(2)

An elasticity measure less than one means that demand is __________.

(3)

An elasticity measure greater than one means that demand is __________.

(4)

The Latin expression ceteris paribus means

	having made all other necessary changes.
	holding constant all other variables.
	assuming all households have similar incomes.
	given the level of income in the economy.

(5)

A variable measured in terms of money is called a ____________________.

	real variable
	nominal variable
	macroeconomic variable
	microeconomic variable

(6)

Which of the following is true about the importance of money in economics?

	Money is important in both macroeconomics and microeconomics.
	Money is important in macroeconomics but not microeconomics.
	Money is important in microeconomics but not macroeconomics.
	Money is not important in either microeconomics or macroeconomics.

(7)

What is the difference between normative and positive economics?

	Positive economics is descriptive and predictive; normative economics is prescriptive.
	Positive economics highlights the positive aspects of the economy; normative economics highlights the average features.
	Positive economics studies the actions of individuals; normative economics studies the actions of households.
	Positive economics is an applied social science; normative economics is a theoretical social science.

(8)

The slope of the demand curve is negative because

	the quantity of a good demanded decreases as income declines.
	the quantity of a good demanded increases as income declines.
	the quantity of a good demanded increases as the price declines.
	the quantity of a good demanded decreases as the price declines.

(9)

What is the result of an increase in the price of bread, a normal good?

	The demand curve shifts to the right.
	The demand curve shifts to the left.
	The quantity demanded increases.
	The quantity demanded decreases.

(10)

What is the effect on demand for bread when the price of bagels, a substitute for bread, rises?

	The demand curve for bread shifts to the right.
	The demand curve for bread shifts to the left.
	The quantity of bread demanded increases.
	The quantity of bread demanded decreases.

(11)

Which of the following would cause the supply curve for bread to shift inward?

	An increase in the price of bread
	An increase in the price of bagels
	A decrease in the price of bread
	An increase in the price of flour

(12)

An improvement in technology shifts the supply curve outward because

	at every price, firms find producing the good to be more profitable.
	the price of the good increases.
	at every price, firms find producing the good to be less profitable.
	the price of the good decreases.

(13)

Which of the following factors does not affect how much bread a baker is willing to produce?

	The price of bread
	The demand for bread
	The cost of inputs
	Technology

(14)

How do expectations of prices affect how much of a good producers are willing to sell?

	Expectations of prices affect only demand, not supply.
	Actual prices, not expectations of prices, affect supply.
	If producers expect prices to fall in the future, they supply less at every price.
	If producers expect prices to rise in the future, they supply less at every price.

(15)

When the price of a good is above equilibrium level,

	the quantity demanded exceeds the quantity supplied.
	the quantity supplied exceeds the quantity demanded.
	the supply curve shifts to the left.
	the supply curve shifts to the right.

(16)

At a price of P₀ in the diagram below, which of the following statements is true?

	Supply equals demand.
	There is excess demand.
	There is excess supply.
	There is scarcity.

(17)

If demand for bread increases at every price, the equilibrium price of bread will

	fall.
	rise.
	remain unchanged.
	depend on income.

(18)

If the demand for bread declines, then

	at the original equilibrium price, there is excess demand.
	at the original equilibrium price, there is excess supply.
	the supply curve shifts to the right.
	the supply curve shifts to the left.

(19)

Peanut butter and jelly are complementary goods. When the price of peanut butter rises, the demand for jelly ________ and the price of jelly ________.

	rises; falls
	rises; rises
	falls; rises
	falls; falls

(20)

The measure of elasticity that economists use is

	always a positive number.
	always a negative number.
	positive when demand is elastic and negative when demand is inelastic.
	negative when demand is elastic and positive when demand is inelastic.

(21)

Which of the following formulas is the correct expression for the slope of a line?

(22)

Graphically how would an increase in income affect the demand for hamburgers?

	The slope of the demand curve would increase.
	The slope of the demand curve would decrease.
	The demand curve would shift outward, parallel to the original demand curve.
	The demand curve would shift inward, parallel to the original demand curve.

(23)

Given the equation P = $6.00 ? $.40Q, where P is the price of the good and Q is the quantity of the good demanded, how many units will this consumer demand if the price is $3.60?

	1.44 units
	3 units
	3.6 units
	6 units

(24)

Which of the following is true about unit elasticity?

	Revenues remain unchanged when the price changes.
	Elasticity of demand increases as one moves down the demand curve.
	Elasticity of demand decreases as one moves down the demand curve.
	The elasticity of demand is greater than one at every point along the demand curve.

(25)

Which of the following could be a determinant of the quantity demanded of a good?

	The price of the good
	The price of related goods
	Income
	Expectations about the future price of the product
	All of the above

violethare488

1)The law of demand states that as the price of a good rise, _____.

A. buyers purchase more of the good because the price of a substitute has risen.

B. buyers purchase less of the good because their real income decreases with an increase in price.

C. buyers purchase more of the good because they expect prices to be even higher in the future

D. buyers purchase less of the good because they expect prices to fall in the future.

2) A movement along a demand curve can be attributed to a change in:

A. the quantity demanded of a good.

B. the demand for a good.

C. the substitution effect of consuming a good.

D. the opportunity cost of producing a good.

3) If we say that demand for a good has increased, we mean that there has been:

A. a leftward shift of the demand curve.

B. a rightward shift of the demand curve.

C. a leftward movement along the demand curve.

D. a rightward movement along the demand curve.

4) Which of the following will cause the demand curve for a normal good to shift to the right?

A. An increase in the price of a complementary good.

B. A decrease in income.

C. A decrease in the price of the good.

D. An increase in the price of a substitute good.

5)Which of the following best defines supply?

A. The amount of a good that is produced at the least possible cost, other things constant

B. The amount of a good that producers are willing and able to sell at each possible price, other things constant.

C. The amount of a good that consumers want to buy at different income levels

D. The amount of a good that producers want to sell at a fixed price

6)The market supply curve of a particular product indicates the total quantities:

A. that are actually sold during a given time period.

B. that sellers are willing to offer for sale at a fixed price.

C. that buyers are willing to purchase at alternative prices.

D. that sellers are willing and able to offer at alternative prices.

7)When quantity demanded of a good exceeds the quantity supplied at the prevailing market price, _____.

A. the demand curve shifts rightward until the surplus is eliminated

B. the market is in equilibrium.

C. the price of the good will tend to increase.

D. the price of the good will decrease

8)A shortage of textbooks is most likely to cause:

A. an increase in the price of textbooks.

B. a decrease in the supply of textbooks.

C. a decrease in the price of paper.

D. an increase in the cost of printing.

9)The most important characteristic of the equilibrium price is that it:

A. maximizes the quantity demanded.

B. clears the market, leaving neither a surplus nor a shortage.

C. minimizes the quantity demanded.

D. guarantees that producers earn the profit.

10)If both demand and supply increases in a market that is initially in equilibrium, the price will:

A. increase only if demand increases more than supply.

B. increase only if supply increases more than demand.

C. remain unchanged while quantity will increase.

D. remain unchanged while quantity will decrease.

lavendertrout13

1.When the term "price" is used in the law of demand, price refers to Select one:

a. the price of the well relative to the price of another good.

b. the nominal price of the well relative to its nominal price in the previous year.

c. the absolute price of the good.

d. the dollar price of the good.

2.In economics, the meaning of demand refers to Select one:

a. the quantities of a good that people will sell at various prices.

b. the total satisfaction that consuming good provides people at different prices.

c. how badly someone wants a good.

d. the quantities of a good that people will buy at various prices.

3.Which of the following illustrates the law of demand?

Select one:

a. College enrollment increases when federal tuition grants are readily available to students.

b. More people watch college basketball in March than in November.

c. The number of long-distance calls in the United States is greater on Christmas than on Valentine's Day.

d. The prevailing wage rate in an industry determines how many people choose to work in the industry.

4.The absolute price of a good is its

Select one:

a. money price.

b. projected price.

c. relative price.

d. subjective price.

5.The only variable that can affect a movement along the demand curve is

Select one:

a. the number of buyers.

b. income levels.

c. the price of the good itself.

d. the number of substitutes.

6.The price of an MP3 music player increased from $50 to $70 while the price of a music download increased from $1 to $2. The relative price of an MP3 music player in terms of music downloads Select one:

a. increased from 0.04 to 0.05.

b. decreased, but we need more information to know by how much.

c. increased, but we need more information to know by how much.

d. decreased from 50 to 35.

7.The quantity supplied of a particular good is the amount of the good that

Select one:

a. households want firms to sell at each price during a particular time period.

b. firms will actually end up buying at a particular price during a given time period.

c. firms are willing to sell at each price during a particular time period.

d. households are willing to consume at each particular price.

8.An increase in price will lead to an increase in quantity supplied. This statement is

Select one:

a. the law of supply.

b. untrue always.

c. the law of demand.

d. a normative statement.

9.Regarding the law of supply, which of the following statements is correct?

Select one:

a. As demand falls, supply rises.

b. The ceteris paribus assumption does not apply.

c. As the price of a good or service rises, the quantity supplied will increase.

d. As the price of a good or service rises, the quantity supplied will decrease.

10.A given supply curve illustrates Select one:

a. the relationship between expected future prices and quantity supplied.

b. the effect of a change in resource costs on the quantity supplied.

c. the effect of a change in technology on the quantity supplied.

d. the relationship between price and quantity supplied.

11.If there is a decline in the price of milk, an input in the production of ice cream, then there will be a(n)

Select one:

a. decrease in the supply of ice cream and a leftward shift of the supply curve.

b. increase in the supply of ice cream and a rightward shift of the supply curve.

c. increase in the quantity of ice cream supplied and a movement down along the supply curve.

d. decrease in the quantity of ice cream supplied and a movement up along the supply curve.

12. An improvement in technology in the production of computers would

Select one:

a. increase the demand for computers.

b. decrease the supply of computers.

c. decrease the demand for computers.

d. increase the supply of computers.

13.Which of the following is a non-price determinant of supply? Select one:

a. the number of consumers

b. technological advances in production

c. the price of related goods consumers may buy

d. consumers' incomes

14.Which of the following does NOT cause a rightward shift in the supply curve?

Select one:

a. a reduction in resource costs

b. an increase in technology

c. a reduction in the expected future price of the good

d. a reduction in the price of the good

15.Which of the following is a possible outcome of setting a legal maximum rental rate below the market-clearing rental rate?

Select one:

a. a decrease in the quantity of rental housing demanded

b. an increase in the quantity of rental housing supply

c. a black market in rental housing

d. a surplus of rental housing

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ECON 110 Chapter Notes - Chapter 3: Demand Curve, Ceteris Paribus, Inferior Good

ECON 110 Full Course Notes

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