project planning

Project description
.why is cost estimation such an important component of project planning? discuss how it links together with the work breakdown structure and the project schedule.
2. think of an example of parametric estimation in your personal experience, such as the use of a cost multiplier based on a similar, past cost. Did parametric estimation work or not? discuss the reasons why.
3. would you prefer the use of bottom-up or top-down budgeting for project cost control? what are the advantages and disadvantages associated with each approach?
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