What are the three methods of estimation? Discuss.

The three methods of estimation:--

1. Top-down estimation

Once the scope of the project has been identified, the top-down estimation method breaks down the project into distinct phases, work, and tasks, depending on your project’s work breakdown structure (WBS). 

With this estimation technique, primary stakeholders with ambitious visions can create an overall timeline or budget for a project without knowing all the particulars. That plan can then be broken up into smaller chunks, leaving the details to others with more knowledge about the project specifics. 

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