Schedule Estimation and Uncertainty Surrounding the Cone of Uncertainty

  • Authors:
  • Todd Little

  • Affiliations:
  • Landmark Graphics

  • Venue:
  • IEEE Software
  • Year:
  • 2006

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Abstract

One software product company found that its project duration estimation accuracy followed a lognormal distribution and the uncertainty range was nearly identical at all stages in the project life cycle. This conflicts with popular interpretation of the "cone of uncertainty" concept.