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Demand
| Question | Answer |
|---|---|
| Demand | How willing a buyer is to pay for a certain good at a certain price |
| Demand curve | The relationship between price and quantity demanded |
| Quantity demanded | How much of something a person wants at a specific price |
| Law of Demand | Demand curves will always be downward sloping because of the inverse relationship between price and quantity demanded |
| Income effect | When the price of a good rises, people buy less of it do to a decrease in purchasing power |
| Substitution effect | When the price of a good increases, people replace it with the cheapest alternative |
| Diminishing marginal benefit | People buy less of something as their marginal benefit decreases |
| Giffen good | A theoretical good with an upward sloping demand curve that says due to severe budget constraints and importance of good makes people buy more of it |
| Veblen good | A theoretical good with an upward sloping demand curve that says due to prestige of an item people want to buy it |
| Market demand | The summation of each individual demand curve |
| Movement | Going up and down a demand curve by price |
| Shift | Moving left or right on a demand curve due to other factors |
| Increase in demand | A shift right on the demand curve |
| Decrease in demand | A shift left on the demand curve |
| Normal goods | A good people demand more of when their income rises |
| Inferior goods | A good people demand less of when their income rises |
| 6 factors that shift demand curves | Income, preferences, price of related goods, expectations, congestion and network effects, type and number of buyers |
| Preferences | Changing preferences can make you buy more or less of something |
| Complements | Goods that are used together. When the price of one good rises, demand for the other good falls |
| Substitutes | Goods that are used in place of one another. When the price of one good rises, demand for the other good rises |
| Expectations | If you believe prices will rise, you may try and buy more today. If you believe prices will fall, you may try and buy less today |
| Network effect | When more people use a good or service, it makes it more useful and raises demand |
| Congestion effect | When more people use a good or service, it makes it less useful and reduces demand |
| Number of buyers | As more people demand a product, demand increases, often by increase of population |
| Type of buyers | As different people demand a product, demand increases, often through trade |