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Analogous Estimating in detail

Analogous-Estimating PMBOK guide

>Analogous estimating

A technique for estimating the duration or cost of an activity or a project using historical data from a similar activity or project.

Where Analogous estimating analysis Technique is applied?

Within the PMBOK Guide Analogous estimating Technique is used in the following process:

ProcessesProcess Group/

Knowledge Area

Estimate Activity DurationsPlanning / Project Schedule Management
Estimate CostsPlanning / Project Cost Management
Estimate Activity ResourcesPlanning / Project Resource Management

More details about Analogous estimating

  • Analogous estimating is a technique for estimating the duration, resources or cost of an activity or a project using historical data from a similar activity or project.
  • Analogous estimating uses parameters from a previous, similar project, such as duration, budget, size, weight, and complexity, as the basis for estimating the same parameter or measure for a future project.
  • When estimating durations, this technique relies on the actual duration of previous, similar projects as the basis for estimating the duration of the current project.
  • It is a gross value estimating approach, sometimes adjusted for known differences in project complexity.
  • Analogous duration estimating is frequently used to estimate project duration when there is a limited amount of detailed information about the project.
  • Analogous estimating is generally less costly and less time-consuming than other techniques, but it is also less accurate.
  • Analogous duration estimates can be applied to a total project or to segments of a project and may be used in conjunction with other estimating methods.
  • Analogous estimating is most reliable when the previous activities are similar in fact and not just in appearance, and the project team members preparing the estimates to have the needed expertise.
  • Analogous cost estimating uses values, or attributes, of a previous project that are similar to the current project. Values and attributes of the projects may include but are not limited to: scope, cost, budget, duration, and measures of scale (e.g., size, weight). Comparison of these project values, or attributes, becomes the basis for estimating the same parameter or measurement for the current project.
  • While estimating resources, analogous estimating uses information regarding resources from a previous similar project as the basis for estimating a future project. It is used as a quick estimating method and can be used when the project manager can only identify a few top levels of the WBS.

Test your understanding

  1. Analogous estimating is accurate among all estimating methods
  2. Analogous estimating can be practiced only at the project level or WBS level
  3. Analogous estimating provides estimates as gross values
  4. Analogous estimation cannot be combined with other estimating methods
  5. Expert judgment and analogous estimates are the same

Answer keys :

  • 1 – False
  • 2 – False
  • 3 – True
  • 4 – False
  • 5 – False

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