ECON 1B03 Lecture Notes - Lecture 3: Market Power, Inferior Good, Perfect Competition
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ECON 1B03 Full Course Notes
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Document Summary
Market is a group of buyers and sellers of a particular good or service. The terms supply and demand refer to the behaviour of people as they interact with one another in markets. Market demand refers to the sum of all individual demands for good or service. Market supply refers to the sum of all individual supplies of a particular good or service. Firms can freely enter or exit the market. Buyers and sellers are numerous that no individual consumer or firm can affect the market price -- each is a price taker. Quantity demanded (qd) : the amount of a good or service that consumers are willing and able to buy. Other things being equal, when the price of a good rises, the quantity of demanded that good falls. Normal good: when income increases, demand increases and vice versa. Inferior good: when income increases, demand decreases and vice versa.