Different consumers are charged different prices for the same product/service.
Logical behaviour, e.g. a consumer opts for the cheaper of two products.
Shows the price and quantity in a table format, e.g. demand schedule and supply schedule.
Goods which are similar products and can be used instead, e.g. Barry’s Tea and Lyons Tea.
The amount that the supplier is willing to sell at a given time for a given price.
Graph showing the quantities that a seller will supply at different prices.
Shows the price of the product and the quantity supplied at that given price.
While external factors are uncontrollable, they don't have to be unforeseeable. The economy, politics, competitors, customers and even the weather are all unpredictable but that doesn't mean you can't prepare for them. For example, as summer weather improves, demand for garden furniture increases.