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1. What is unique about time box estimates that make them different from other project estimating approaches?
The time box estimate sets a minimum and maximum time for a task or activity – putting that activity in a “box”.
The time box estimate balances the three sides of the project management triangle, scope, schedule and resources.
Schedule is fixed and the scope is variable.
2. What type of project is most likely to use time box estimates?
Urgent or crisis project.
Projects with extensive use of outside suppliers or vendors.
A project with rigid milestones.
3. What is the impact of a resource change on a time box estimate?
Time stays the same, but scope may change.
The time is modified to accommodate the availability of the new resource.
Time and scope are modified to rebalance the project management triangle.
4. What does a project team do if a time box ends and the task deliverable is not yet complete? The team members on the task made substantial progress, but there is more that should be done on that task.
Use whatever has been completed and start the next task.
Use what has been completed to start the next task, but direct the team member to finish the time box task in parallel with the next task.
Continue working on the task until it is complete.
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