2.1 Demand Flashcards
What is demand
The quantity of goods and services consumers are willing to and able to purchase at different possible prices during a particular time period
Law of demand
Negative relationship between the price of a good and its quantity demanded over a particular demand
E.x if price increases, quantity demanded decreases
Market demand
Sum of all individual demands for a good
What causes a movement along the demand curve?
Changes in price
What causes a shift of the demand curve
non-price determinants
Non-price determinants of demand
- income of normal/inferior goods
- preferences and tastes
- Price of substitute goods
- Price of complementary goods
- number of consumers
Explain the non-price determinant of income
Income of normal good - when incomes increase, so does demand
Income of inferior good- when income increases, demand falls
Explain the non-price determinant of preferences/tastes
If preferences change in favor of a product, demand will increase
Explain the non-price determinant of substitute goods
Two goods are substitute goods if they satisfy a similar need
If price of good A increases, demand for good B will increase, as it is cheaper to purchase
Explain the non-price determinant of complementary goods
Two goods that are used together
In good A experiences a fall in price, then good B’s demand will increase.
Explain the non-price determinant of number of consumers
If there is more consumers, there will be more demand
What is utility
The satisfaction consumers gain from consuming something
What is the law of diminishing marginal utility
As consumption of a good increases, marginal utility the consumer receives will decrease with each good consumed, and become less willing to purchase good.
This underlines the law of demand
What is the substitution effect
If the price of a good falls, the consumer purchases more of the less expensive good, increasing quantity demanded
What is the income effect
A fall in price increases consumers real income (purchasing power), resulting in an increase in quantity demanded