tailieunhanh - Lecture Project management in practice - Chapter 6: Estimating project, times and costs

After reading the material in this chapter, you should be able to: Understand that estimating can be carried out to differing levels of detail and accuracy, apply any number of estimating techniques to assist in scoping and planning a project, understand the concept of contingency versus padding. | CHAPTER 6 Estimating Project, Times and Costs Learning Elements Understand that estimating can be carried out to differing levels of detail and accuracy. Apply any number of estimating techniques to assist in scoping and planning a project. Understand the concept of contingency versus padding. RECAP. Leading on from Step 4. Estimating: Moving towards a draft budget and schedule The journey from WBS to estimating and the creation of the budget schedule and resource matrix ESTIMATING Estimates are needed to: Support good decisions Determine whether the project is worth doing Determine how long the project should take and its overall cost Schedule work Determine the resource required (human and other) Develop time-phased budgets (cash flow) Establish the project baseline Determine how well the project is progressing What is being estimated? Resources Durations Costs Estimating Guidelines for Time, Costs and Resources Consider: Responsibility Use several people to . | CHAPTER 6 Estimating Project, Times and Costs Learning Elements Understand that estimating can be carried out to differing levels of detail and accuracy. Apply any number of estimating techniques to assist in scoping and planning a project. Understand the concept of contingency versus padding. RECAP. Leading on from Step 4. Estimating: Moving towards a draft budget and schedule The journey from WBS to estimating and the creation of the budget schedule and resource matrix ESTIMATING Estimates are needed to: Support good decisions Determine whether the project is worth doing Determine how long the project should take and its overall cost Schedule work Determine the resource required (human and other) Develop time-phased budgets (cash flow) Establish the project baseline Determine how well the project is progressing What is being estimated? Resources Durations Costs Estimating Guidelines for Time, Costs and Resources Consider: Responsibility Use several people to estimate Normal conditions Time units Independence Contingencies Carrying out a risk assessment Cost of Quality (CoQ) Top-down versus Bottom-up Estimating Top-down approach Are usually derived from someone who uses experience and/or information to determine the project duration and total cost. Bottom-up approach Can serve as a check on cost elements in the WBS by rolling up the work packages and associated cost accounts to major deliverables at the work package level. Hybrid – phase estimating Used when an unusual amount of uncertainty surrounds a project and it is impractical to estimate times and costs for the entire project. Methods for Estimating Project Costs, Time and Resources Consensus methods Expert judgment Alternative analysis Parametric estimating Analogous method 3-point estimate Methods for Estimating Project Costs, Time and Resources(cont.) Vendor bid analysis Estimating tools and systems Function point methods Learning curves Template methods Range estimating

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