Test Estimation
Test estimation is the activity of predicting the effort, duration, resources, and cost required to complete testing activities.
“An approximation related to various aspects of testing.”
(Definition reproduced from the ISTQB Glossary. Copyright belongs to ISTQB.)
View the complete ISTQB GlossaryWhat is Test Estimation?
Estimates help project managers plan schedules, allocate resources, and monitor testing progress throughout the project.
Planning support: Estimates guide project schedules.
Resource allocation: Helps assign people and tools.
Continuous refinement: Estimates improve as project information becomes available.
Real World Example
A regulated product team is preparing a release where Test estimation appears in reviews, test design conversations, or defect triage rather than as an isolated glossary word.
The risk is that the team treats Test estimation as interchangeable with nearby ISTQB terms. That makes test scope blurry and can lead to weak evidence for the release decision.
The tester anchors the discussion in the official definition, asks where the concept appears in the product, and designs examples that show the difference between Test estimation and similar ideas.
The page becomes useful in practice because Test estimation is connected to a specific testing decision, not memorized as a detached definition.
Practice Questions
Question 1
Which statement BEST describes Test estimation in the context of ISTQB terminology?
Question 2
A tester needs to explain Test estimation to a non‑technical stakeholder. Which approach is MOST appropriate?
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