Once the scope of a project is defined and approved, usually any scope-related changes are not desired because otherwise the project may reach its completion with more time and cost consumed. For example, the scope is increased because new features are added to the project product; hence the project team needs to spend more time and effort on developing and implementing the new features. In order to succeed, the project needs to be re-assessed by time. In such a situation task duration re-estimation is required.
Re-estimation of task duration is a great way to adequately respond to project scope changes. Re-estimation helps reach a more accurate and complete understanding of the project’s current state to determine new time-frames for tasks and figure out the amount of extension of the project’s target date.
The simplest way to re-consider and re-calculate project task durations is to review project work decomposition, understand what tasks are affected by scope changes, and then re-estimate individual durations of those tasks. Task burn-down chart will help forecast future task performance. Once individual duration estimates are amended and new time-frames are added, the project manager can create a performance forecast and then add it to the chart. This forecast will be the basis for dealing with scope changes in task level.