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Why can activity duration be different than the estimated work effort?
The duration depends on the availability and capacity of resources. For example, if you dedicate 3 hours a day to work on the fence, then the duration would be 10 days (30 hours total effort divided by 3 hours/day).
What is the difference between effort and duration in Microsoft project?
Effort (also referred to as Work) is the actual time required to complete the task. Duration is the total amount of time in which the user has to complete the task. For example, you might have a task that only takes 2 hours to physically complete, but that task can be completed anytime over the next week.
How do you calculate time and effort?
In general, add 15% of the effort hours for project management. For instance, if a project estimate is 12,000 hours (7 – 8 people), and then a full-time project manager (1800 hours) is needed. If the project estimate is 1,000 hours, the project management time would be 150 hours.
How is effort estimation used in project planning?
Effort estimation represents step 3 of the project planning process. Before we can plan the project schedule we have to estimate effort and duration of all the work packages of the WBS. Effort estimation will generate a lot more information than only effort and duration: Who will be responsible for each work package?
What’s the difference between the duration and the effort?
Duration on the other hand is the total time that it takes to complete the project measured in work days, hours or weeks. The duration depends on the availability and capacity of resources.
What’s the best way to estimate effort hours?
The bigger and more complex a task, the harder it is to make reliable estimations. Instead of hoping your predictions will be right, it is better to break those tasks down into smaller pieces. Then estimate each piece separately and add up the values. This method is also called bottom-up estimation.
How to estimate the duration of a project?
In order to estimate the duration of a project, first we have to determine the effort. Let’s try to give an example to simplify the concept: if you estimate about 30 hours of active work to complete a fence, the effort will be 30 hours.