Project duration and staffing

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  • 1.  
  • 2.
    • As well as effort estimation, managers must estimate the calendar time required to complete a project and when staff will be required
    • Calendar time can be estimated using a COCOMO 2 formula
    • TDEV = 3 ´ (PM)(0.33+0.2*(B-1.01))
    • PM is the effort computation and B is the exponent computed as discussed above (B is 1 for the early prototyping model). This computation predicts the nominal schedule for the project
    • The time required is independent of the number
    • of people working on the project
  • 3.  
  • 4.
    • Staff required can’t be computed by diving the development time by the required schedule
    • The number of people working on a project varies depending on the phase of the project
    • The more people who work on the project,
    • more total effort is usually required.
    • A very rapid build-up of people often correlates with schedule slippage
  • 5.