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متابعة

What is the meaning of Bottom-up estimation?

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تاريخ النشر: 2014/03/25
Muhammad Khatree
من قبل Muhammad Khatree , Associate Director – Technology Advisory , KPMG Australia

For a given package of work, it is the process of building an estimate of activities and costs, starting with each individual activity or cost, and then aggregating them upwards to come up with a total.

 

In other words, start at the lowest level you can (the highest level of granularity in terms of detail), and for each item in that level, estimate its cost and the work required, and then come up with a sub total for that level. Repeat the process for each level until you reach the top of the work package (the end result), and then add the sub totals to yield a total estimation. 

 

Using a WBS structure will help guide you through the levels of activities.

Mohamed Basem Hemedh
من قبل Mohamed Basem Hemedh , Siren Projects Eastern Region Manager , Nextel Millennium Telecom Manager

It's more accurate if you need more control & understan your project & budget.