You tend to be conservative in your project estimations because you know how many things...

Context Analysis:

The manager perceives conservative estimates as overly negative. The goal is to balance optimism with realism to satisfy both the team and the manager.

Three-point estimation provides a range of estimates: optimistic, pessimistic, and most likely, addressing the need for a positive yet realistic projection.

Evaluation of Options:

A. Wideband Delphi:

Involves group-based estimation using consensus techniques. While reliable, it does not explicitly offer optimistic vs. realistic estimates.

B. Planning Poker:

Often used in Agile projects, this technique involves relative estimation but does not inherently provide optimistic and pessimistic figures.

C. Three-point estimation:

Correct. Combines optimistic, pessimistic, and realistic estimates to calculate a weighted average. This allows presentation of both realistic and “positive” numbers to the manager.

D. Extrapolation:

Based on past data trends but does not offer a range of estimates or a way to address manager concerns directly.

Syllabus Alignment:The ISTQB syllabus mentions estimation methods like three-point estimation as effective techniques for providing balanced and transparent project timelines (TM-2.2.1).

References:

ISTQB Advanced Level Test Management Syllabus​