Which estimating technique involves determining resource needs by aggregating estimates of individual tasks from the lowest level up to the project level?
Bottom-up Estimating
Expert Judgment
Parametric Estimating
Analogous Estimating
Bottom-up Estimating involves calculating the resource requirements for each individual task at the most detailed level and then adding them up to determine the total resources needed for the project. This method provides a high level of accuracy because it considers all components of the work. Parametric Estimating uses statistical relationships between historical data and other variables to estimate resources. Analogous Estimating relies on data from previous similar projects but does not aggregate detailed task estimates. Expert Judgment uses the knowledge and experience of experts but doesn't systematically aggregate estimates from the lowest level.
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