A project manager is working on an estimate. The project team is estimating each work package and then finding the total of all the work packages. Which technique is the project manager using?

The correct answer is C. Bottom-up estimating. Bottom-up estimating works by decomposing work to the work package level, estimating each individual work package, and then aggregating (rolling up) those estimates to derive the total project estimate. This approach is highly accurate but time-intensive. It contrasts with…

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Question

A project manager is working on an estimate. The project team is estimating each work package and then finding the total of all the work packages. Which technique is the project manager using?

Options

AThree-point estimating
BParametric estimating
CBottom-up estimating
DData analysis

How the community answered

(15 responses)

B
7% (1)
C
93% (14)

Explanation

Bottom-up estimating works by decomposing work to the work package level, estimating each individual work package, and then aggregating (rolling up) those estimates to derive the total project estimate. This approach is highly accurate but time-intensive. It contrasts with top-down approaches: Analogous estimating uses historical data from similar projects, Parametric estimating uses statistical relationships between variables (e.g., cost per unit), and Three-point estimating uses optimistic, pessimistic, and most likely values to calculate a weighted average.

Topics

#Estimating techniques#Bottom-up estimating#Work packages#Cost/Duration estimation

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