Zusammenfassung der Ressource
SAB4#55_Estimate_Activities_Duration
Anmerkungen:
- * Estimate Activity Durations is the process of estimating the numbers of work periods needed to complete individual activities with estimated resources.
* Estimate how much time each Activity will take.
- Process: Estimate Activity Durations
- Process Group: Planning
- Knowledge Area: Time Management
- 1. Schedule Management Plan
- 2. Activity list
- 3. Activity attributes
- 4. Activity resources requirements
- Estimate Activities
Resources
- 5. Resource Calendars
- 6. Project Scope Statement
- 7. Risk Register
- 8. Resource breakdown structure RBS
- Estimate Activities
Resources
- 9. EEF
- 10. OPAs
- 1. Expert Judgment
Anmerkungen:
- Will come from your project team members who are familiar with the work that has to be done.
- 2. Analogous Estimation (Top Down)
Anmerkungen:
- Is when you look at activities from previous projects that were similar to this one and look at how long it took to do similar work before.
- 3. Parametric Estimating
Anmerkungen:
- Parametric estimating looks at the relationships between variables on an activity to calculate time or cost estimates. The data can come from historical records from previous projects, industry requirements, standard metrics, or other sources.
- Regression Analysis (scatter diagrams)
- Learning Curve
- 4. Three-Point estimating
Anmerkungen:
- Statistically, there is a very small probability of completing a project on exactly any one date. As we know, things do not always go according to plan.
With the three-point technique, estimators give an optimistic (0), pessimistic (P), and most likely (M) estimate for each activity.
- 5. Group decision-making techniques
Anmerkungen:
- Involving team members in estimating can be beneficial on many levels. Those doing the work are most likely to have a good understanding of the time required to complete the effort.
- 6. Reserve Analysis
Anmerkungen:
- Means adding extra time to the schedule (called a contingency reserve or a buffer ) to account for extra risk.
- 1.- Activity duration estimates
- 2. Project Document Updates