23.5 Estimation techniques
Estimating project schedules is difficult. You have to make initial estimates on the basis of an incomplete user requirements definition. The software may have to run on unfamiliar platforms or use new development technology. The people involved in the project and their skills will probably not be known. There are so many uncertainties that it is impossible to estimate system development costs accurately during the early
stages of a project. Nevertheless, organizations need to make software effort and cost estimates. Two types of techniques can be used for making estimates:
Experience-based techniques The estimate of future effort requirements is based on the manager’s experience of past projects and the application ...
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