ECON 2210 Lecture Notes - Demand Curve

57 views3 pages

10 May 2013

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Change in demand refers to a shift in the demand curve. Demand curve shifts to the right is an increase in demand. Demand curve shifts to the left is a decrease in demand. Three exogenous parameters implicitly held constant were income, the prices of other goods and tastes or preferences. Change in demand result from changes in exogenous parameters. Having different tastes mean people have different marginal value and different rates at which those marginal values might diminish. Increase in taste of some good would lead to increase in demand. A change in the quantity demanded is a movement along a demand curve that results from a change in the price of the good. When price falls from p" to p"" then the quantity demanded increases. This is not a shift, there is no change in the demand curve. Changes in quantity demanded result from changes in the relative price.

Related Questions

Please review the following work and correct me if I have mixed up the concepts of movements and shifts of supply and demand curves. Feel free to copy and edit/correct my mistakes. I'll be waiting. Thanks in advance!!

Changes in price dictate movements along demand curves. When a decrease in demand or the quality demanded occurs it's a safe bet that it's correlated to a price increase, which in turn leads to a resultant surplus of that particular commodity in the marketplace. This is because decreased demand means less of that commodity being sold. On the other hand, a price decrease usually leads to an increase in the demand for a particular commodity, or an increase in sales, which in turn leads to a shortage of that commodity in the marketplace.

To shift the demand curve itself, changes need to occur in other aspects of the market beyond simply a change in the price of a commodity. For example, an increase in income means the consumers have more disposable income. With more disposable income, demand for commodities will increase, and results in a shift of the demand curve itself. In this example, the demand curve would shift right. On the opposite side of the coin, cost increases due to production or losses in efficiency may decrease the side of supply, shifting the demand curve to the left.

Analogous to shifts in the demand curve, shifts along a supply curve occur when prices change as well. When the cost to produce a commodity increases, supply drops, and the supply curve shifts to the left. If the cost of production drops, and supply increases, the supply curve shifts to the right as demand develops.

Pharmaceutical supply and demand is an easy way to understand these concepts.

Drug demand increases: Price decreases, supplies decrease.

Drug demand decreases: Price increases, supplies increase.

Drug supply increases: Production costs drop, demand drops.

Drug supply decreases: Production costs increase, demand increases.

"But where and how do movements and shifts occur in the above?"

purpleworm770

When quantity demanded decreases in response to a change in price,

A. the demand curve shifts to the right.
B. the demand curve shifts to the left.
C. there is a movement down along the demand curve.
D. there is a movement up along the demand curve.
E. the supply curve shifts to the right.

The price elasticity of demand is the measure of the responsiveness of the demand for a good to a percentage change in the price of that same good. When the demand for a good changes due to an increase or decrease in the price of the good, it can be said that the good has a price elastic demand. On the other hand, a good whose demand is not significantly affected by a change in the price levels is price inelastic. For example, luxury goods are usually price elastic because these are not something that most people really need. Thus, when the price of luxury goods increases, the demand for such goods falls. Goods that fall within the latter category are usually the basic necessities such as food and prescription medicine. Even when these types of goods become pricier, most people would find ways to afford them because they need those items to survive.

periwinkleraccoon781

QUESTION 25

What will happen in a market where a binding price floor is removed?

	a.	There will be upward pressure on the prices.
	b.	The price or quantity of the product sold in the legal market will not change.
	c.	There will be downward pressure on the prices.
	d.	The products sold will become scarcer.
	e.	There will be increased pressure to buy and sell the good on the black market.

1.05000 points

QUESTION 26

The local bakery calculates the price elasticity of demand for its cinnamon rolls to be â1.25. This tells them that demand is ________ and price is ________ to the buyer.

	a.	perfectly inelastic; everything
	b.	perfectly elastic; meaningless
	c.	elastic; more important than the quantity
	d.	inelastic; less important than the quantity
	e.	unitary elastic; on the same level as quantity

1.05000 points

QUESTION 27

Marginal product is the change in:

	a.	total output minus the change in input.
	b.	total output divided by the change in input.
	c.	input divided by the change in total output.
	d.	total output plus the change in input.
	e.	total output times the change in input.

1.05000 points

QUESTION 28

The government imposes a tax on each plastic bag sold such that the producer of the plastic bags must pay the tax to the government. In the market for plastic bags, the:

	a.	supply curve shifts to the left.
	b.	supply curve shifts to the right.
	c.	demand curve shifts to the right.
	d.	demand curve shifts to the left.
	e.	the supply curve and the demand curve shift to the left.

1.05000 points

QUESTION 29

Pepsi and Coke are considered substitute goods. Because of this, one would predict that, holding all else constant, if the price of Pepsi increases, we would see:

	a.	the demand curve for Pepsi shift to the right.
	b.	the demand curve for Coke shift to the right.
	c.	no change in the demand for Coke.
	d.	the demand curve for Coke shift to the left.
	e.	the demand curve for Pepsi shift to the left.

1.05000 points

QUESTION 30

The government has identified a situation where the production of a good is creating a negative externality. The government should enact legislation to require firms to internalize the externality:

	a.	as long as there are positive health benefits associated with this policy.
	b.	as long as it will not increase the price of the good being produced.
	c.	in all such cases.
	d.	if the benefits of doing so outweigh the costs.
	e.	as long as it will not create unemployment in this industry.

1.05000 points

QUESTION 31

The out-of-pocket expenses incurred in producing a good are also known as:

	a.	wages and prices.
	b.	fiduciary costs.
	c.	explicit costs.
	d.	capital costs.
	e.	implicit costs.

chocolatemule814

ECON 2210 Lecture Notes - Demand Curve

Document Summary

Get access

Related Documents

ECON 103 Chapter Notes - Chapter 5: Demand Curve, Normal Good, Substitute Good

ECON 103 Chapter Notes - Chapter 5: Inferior Good, Real Income, Demand Curve

ECON101 Lecture Notes - Lecture 3: Ceteris Paribus, Economic Equilibrium, Demand Curve

Related Questions