Which of the following is an estimate based on past projects to predict the current cost and/or duration of the current project?
Which of the following is an estimate based on past projects to predict the current cost and/or duration of the current project?
The estimate based on past projects to predict the current cost and/or duration of the current project is known as a top-down estimate. This approach leverages historical data and high-level assumptions from previous similar projects to create a projected estimate for the current project. It is a common methodology used early in the project life cycle when detailed information is limited.
Top-down: examining the components at a high level in a hierarchical breakdown.
Only top-down among the list is an estimation technique
Top down estimating approach deals with how long the project will take to completion then breaking them into various tasks. Bottom up deals with estimating how long it take each sub task to complete
Top Down: examining the components at a high level in a hierarchical Breakdown. None of the options are correct. Delphi estimation technique uses a combination of expert judgment and history.
They probably really meant B as it says that the estimation should be based on previous project costs and experience
I think D was selected as the answer in the context of estimating the current cost based on estimation performed early in the project life cycle when detailed information is limited and relies on high-level assumptions, analogous estimation, or historical data from similar projects.
Babok v2 Pages 170, 171 Top-down estimate is equal Analogous Estimate. Past Estimate Doesn't exists
Option D