Womack Report

March 6, 2007

Microeconomics, March 6

Filed under: Economics,Notes,School — Phillip Womack @ 2:08 pm

Quick start today. Talking about costs.

  • Actual Cost of a good or service is the amount paid it.
  • Opportunity Cost is the cost of the next-best alterative choice.
  • Short-Run Costs are costs in a period which doesn’t allow one to change the fixed inputs, such a factories, technology, organization size, and so forth.
  • Long-Run Costs are costs in a period long enough to change all the inputs, even fixed inputs.
  • Past Costs are cost which have already been incurred and cannot be recovered.
  • Future Costs are costs which will be incurred later, and over which managers can still excercise control.
  • Explicit Costs are costs which can be easily identified or recognized. Closely related to actual costs.
  • Implicit Costs are costs which are not easily recognized, such as opportunity costs.
  • Imputed Costs are costs which were not spent, but would have been spent in the absence of the owner’s resources.
  • Accounting Costs are very similar to actual costs. Accounting costs are recordable costs; costs which can be quantified.
  • Economic Costs are the combination of explicit costs, implicit, and imputed costs. The combination of all costs that are paid or would have normally been paid.
  • Fixed Costs are costs which will remain unchanged throughout all levels of production.
  • Variable Costs are costs which change depending on the level of output. Positive relationship, normally, meaning that as output increases, variable costs increase.
  • Semi-Fixed Costs are costs which are fixed for certain levels of output, and then increase. If graphed, slices of a semi-fixed may appear to be fixed, but the overall trend of the graph line is characteristic of variable costs.
  • Semi-Variable Costs are effectively the same as semi-fixed costs.
  • Total Costs is the sum of variable and fixed costs.
  • Marginal Costs are the costs of producing one more unit of output.  A graph of marginal costs will be U shaped, indicating that maximum efficiency is not at the extremes of possible production.

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