Chapter 13 - The Cost of Production Flashcards
Total Revenue
- the amount a firm receives from the sale of its output
Total Cost
- the market value of the inputs a firm uses in production
Firm Profit
- a firm’s goal is to maximize profit
Profit = total revenue - total cost
Explicit Costs
- require an outlay of money (e.g. paying money to workers)
Implicit Costs
- do not require a cash outlay (e.g. the OC of the owner’s time)
Accounting Profit
- total revenue minus total explicit costs
Economic Profit
- total revenue minus total costs (explicit and implicit)
A Production Function
- shows the relationship between the quantity of inputs used to produce a good and the quantity of output of that good
- represented by a table, equation, or graph
Marginal Product
- of any input is the increase in output arising from an additional unit of that input, hold all other inputs constant
Marginal Product of Labour (MPL)
- the increase in output per additional worker
- calculated by change in output / change in labour
- the slope of the production function
Diminishing Marginal Product
- the marginal product of an input declines as the quantity of the input increases (other things equal)
Marginal Cost
- the increase in Total Cost from producing one more unit
- usually rises as Quantity rises
= change in total cost / change in quantity
Fixed Costs (FC)
- do not vary with the quantity of output
- e.g. cost of land
- always flat on a graph
Variable Costs (VC)
- vary with quantity produced
- e.g cost of materials
- just under Total Cost Curve
Total Cost (TC)
= Fixed Costs + Variable Costs
- largest curve on a graph
Average Fixed Cost (AFC)
= fixed cost / quantity
- AFC falls as Q increases
Average Variable Cost (AVC)
= variable cost / quantity
- AVC initially falls then eventually increases
Average Total Cost (ATC)
= Total cost / quantity
- u-shaped
- initially AFC pulls ATC down
- increases when AVC pulls ATC up
- lowest point of ATC = Efficient Scale
- MC will intersect ATC at ATC’s lowest point
Short Run
- some inputs are fixed (e.g. factories & land): called FC
Long Run
- all inputs are variable
- all costs are variable
ATC curves in the Long and Short Run
- in the short run there are many different available SR-ATCs
- The LR-ATC is formed with the minimums (Efficient Scales) of each SR-ATC
Economies of Scale
- occur when increasing production allows greater specialization
- workers more efficient when focusing on a narrow task
- more common when Q is low
Diseconomies of scale are due to coordination problems in large organizations
- more common when Q is high