click below
click below
Normal Size Small Size show me how
Costs of Production
Term | Definition |
---|---|
Short Run | A period of time during which at least one factor of production is fixed in supply. |
Long Run | A period of time during which all the factors of production are variable in quantity. |
Explicit Costs | These are costs incurred by a firm when it pays an amount of money for something. |
Implicit Costs | These do not involve the paying out of money but should be considered. |
Fixed Costs | Do not change as output changes. |
Variable Costs | Costs that vary as the output changes. |
Principal rule of conduct | The maxim for all companies in the short run is to cover their variable costs and contribute to the reduction of their fixed costs. |
Law of Diminishing Marginal Returns | As more and more of a variable factor is added to a fixed factor, at some stage the increase in output caused by the last unit of the variable factor will begin to decline. |
Average Cost | (TC/Q) or (AFC+AVC) |
Normal Profit | This is the return that sufficiently rewards the risk-taking of an entrepreneur and it must be earned to stay in a business. |
Average Fixed Cost | Divide fixed cost by quantity. |
Average Variable Cost | Divide variable cost by quantity. |
Average Total Cost | Add AFC and AVC or divide total cost by quantity. |
Marginal Cost | Change in total cost divided by change in quantity. (As Marginal Cost increases so will Average Cost) |
Shape of Short Run Average Cost (SAC) Curve | Downward sloping id due to greater spread of FC + the specialisation and division of labour. Upward sloping is due to law of diminishing marginal returns. |
The long run average curve(LRAC) | is the minimum point of each SAC when joined together. |