Estimation method

from Wikipedia, the free encyclopedia

Estimation methods are used to determine which resources are required and to what extent for product creation.

If a new product is to be created, the product description is created in the planning phase . For implementation, so-called resources must be made available that enable the implementation of the product (s). These resources can be tools, materials, finances, machines, or people.

In the classic working environment as well as in project-oriented procedures, more and more so-called standardized methods are used to estimate costs. she

  • ensure that the work to be done is completely recorded
  • determine what effort is required to achieve the previously defined goals
  • reduce the risk of misjudgments in which the planned funds are too high or too low.

Classification of the estimation methods

  • Algorithmic methods
  • Parametric method
  • Factor or weighting method
  • Comparative methods
  • Analogy method (compare with similar projects)
  • Relation method (similar to the analogy method but more formalized)
  • Methods of expert surveys
  • Individual estimate
  • Multiple estimate
  • Delphi method
  • Estimation exam (similar to the Delphi method, only the estimates are discussed in an open round)
  • Key figure methods
  • Multiplier method (also called the effort-per-unit method)
  • Productivity method
  • Percentage method
  • Sampling method
  • Other methods
  • Two-time method (best case - worst case)
  • Three-time method (also known as the "beta method")
  • Top-Down (total effort is estimated and then broken down into individual work steps)
  • Bottom-up (effort for each work step is estimated, this then results in the total effort)

Estimation procedure

literature

  • Lutz Jürgen Heinrich , Franz Lehner : Information management: planning, monitoring and controlling the information infrastructure . Oldenbourg Verlag, 2005, p. 432ff.
  • Hans-Dieter Litke: Project management: methods, techniques, behaviors. Evolutionary project management . Hanser Verlag, 2007, p. 110ff.
  • Bernd Hindel (Hrsg.), Gerhard Versteegen (Hrsg.): Cross-process project management: Basics of successful projects . Springer DE, 2005, p. 185 ff.
  • Eberhard Stickel: Information management . Oldenbourg Verlag, 2001, p. 65ff.

Web links

See also