Six Sigma Global Institute (SSGI) Project Management Professional Certification Practice Exam

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Question: 1 / 175

When evaluating potential project completion times, which estimate is the most certain?

Range Estimate

Point Estimate

A point estimate is considered the most certain when evaluating potential project completion times because it provides a specific value representing the best expectation of the project's duration. Unlike other estimation methods, a point estimate does not introduce variability or uncertainty; it represents a single, definitive prediction based on the best available data and analysis.

In contrast, range estimates provide a spectrum of possible outcomes (for instance, the project might take anywhere from 10 to 14 weeks), which inherently includes uncertainty. Likelihood estimates often come with probabilities associated with different outcomes, further emphasizing uncertainty instead of providing a clear, concise duration. Qualitative estimates rely on subjective judgment and experience rather than quantitative analysis, making them less reliable for predicting exact completion times.

The directness and precision of a point estimate make it a favored approach when project managers seek a clearer understanding of timelines, which is crucial for planning and resource allocation. Therefore, it stands out as the most reliable method among the options presented.

Likelihood Estimate

Qualitative Estimate

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