PROBE Estimation FAQs

Question 1

Where is the estimation data stored?

Accepted Answer

Estimation data is embedded directly within the Dev Notes section of your story files and optionally aggregated in a central estimation-history file, ensuring metrics stay close to the code.

Question 2

What is the PROBE estimation method?

Accepted Answer

PROBE (PROxy-Based Estimation) is a technique from the Personal Software Process (PSP) that uses historical data and relative size categories to create accurate software effort forecasts based on previous performance.

Question 3

Can I use PROBE estimation if I don't have historical data yet?

Accepted Answer

Yes. The skill includes a set of initial proxy values (ranging from 2 to 32 hours) to get you started. These values are automatically refined as you complete tasks and record actual hours.

Question 4

Does this skill replace standard agile story points?

Accepted Answer

No, it complements them. It maps standard points (1, 2, 3, 5, 8) to size categories (VS, S, M, L, VL) to allow for deeper statistical analysis and time-based forecasting while maintaining agile compatibility.

Question 5

How does the skill improve estimation accuracy over time?

Accepted Answer

The skill tracks actual completion times against original estimates. After every 5 completed stories, it calculates accuracy metrics and adjusts future proxy values and regression parameters based on your actual performance.

PROBE Estimation

PROBE Estimation

Key Features

Use Cases

Key Features

Use Cases