A three-point estimate uses three values to describe uncertainty: optimistic, realistic, and pessimistic.
What is a three-point estimate?
Instead of pretending that one number is enough, the team records a range of possible outcomes. That range helps show risk, complexity, and confidence more honestly.
The three values
- Optimistic: Best-case outcome.
- Realistic: Most likely outcome.
- Pessimistic: Worst-case outcome.
Why three-point estimates matter
- They make uncertainty visible.
- They improve commercial conversations.
- They help define buffers and risk margins.
- They are useful before committing to fixed pricing.
Example
A migration task may be estimated at 15 hours optimistic, 30 hours realistic, and 75 hours pessimistic depending on data quality and hidden rework.
How Apropo supports range-based estimating
Apropo supports range-based estimating with estimate formats that can expose minimum, average, and maximum perspectives instead of forcing one fixed number too early.
- Estimate settings support single-value or min/max-oriented formats depending on how much certainty the team has.
- Summary views can surface min, avg, and max perspectives across the estimate.
- Buffers help teams reflect risk alongside the numeric estimate range.
- Timeline views help translate estimate uncertainty into schedule thinking as well as hours and cost.
How Apropo helps refine a range-based estimate
Range estimates are most useful when teams can compare alternatives, communicate them clearly, and revisit them later.
- Versioned estimate variants help teams compare alternative ranges without overwriting earlier assumptions.
- Share links and export options make it easier to explain uncertainty to stakeholders in a structured way.
- Rate settings and work types help convert estimate ranges into commercial scenarios.
- Budget tracking can later show how the planned range compares with actual delivery data.