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Supply
Question | Answer |
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Supply | refers to the quantity of a good that firms are willing to make available at various prices over a particular period of time. |
Individual supply | refers to the quantity of a good an individual firm is willing to supply at different prices. |
Market/aggregate supply | refers to the total quantity of a good that all the firms are willing to supply at different prices. |
A supply schedule | is a table illustrating the different quantities of a good made available for sale at various market prices at any given time. |
An individual supply schedule | is a table illustrating the different quantities of a good made available for sale by an individual firm at various market prices at any given time. |
A market/aggregate supply schedule | is a table illustrating the total quantities of a good that all the firms in the market are willing to make available for sale at various prices at any given time. |
A supply curve | is a graph illustrating the number of units of a good made available for sale at various market prices at any given time. There is a positive relationship between price and quantity supplied. The supply curve is usually upward sloping left to right. |
An individual supply curve | is a graph illustrating the different quantities of a good made available for sale by an individual form at various market prices at any given time. |
A market/aggregate supply curve | is a graph illustrating the total quantities of a good all the firms in the market are willing to make available for sale at various prices at any given time. |
To derive market supply | we add the quantity supplied by each individual firm at each price to calculate the overall quantity supplied to the market at each price. |
Other circumstance of Supply | Supply restricted by a minimum market price, Supply restricted by limited capacity,Fixed supply (Perfectly inelastic supply). |
A movement along the supply curve is caused by | a change in price of the good or service. |
A shift in the supply curve is caused by | a change in any non-determinant of supply (any other variable that influences the quantity supplied). |
Increase in supply | indicated by a shift to the right. |
Decrease in supply | indicated by a shift to the left. |
Factors affecting the supply of a good | It's own price, Price of related goods,Cost of production, Factors outside the control of a firm/unforeseen circumstances, State of technology, Rates of taxation/granting of subsidies,Objectives of the firm,Number of sellers in the industry. |
Supply function | Sy = f(Py, Pr, C, U, Tch, Tx, O, N) |
Py | Price of good Y. |
Pr | Price of related goods. |
C | Cost of production. |
U | Factors outside the control of the firm. |
Tch | State of technology. |
Tx | Taxation/subsidy. |
O | Objectives of the firm. |
N | Number of firms in the industry. |
Producer surplus | is the difference between the lowest price a supplier is willing to accept for a good and the price they actually receive. |
Jean Baptise Say (1767-1832) | Says law-'Supply creates it's own demand' |
Says law-'Supply creates it's own demand' | People work to acquire needs/wants,Specialisation of labour,Production creates demand,Savings decrease interest rates,Self-adjusting system. |
Says analysis failed to explain | how a deficiency in aggregate demand could cause unemployment. |