QA Fundamentals · Junior · Question 5 of 75
What does the principle 'defects cluster together' mean?
- 1Defects always appear in groups of three or more
- 2A few modules usually contain most of the defects
- 3All defects of a release are in a single file
Show the answer
Correct answer: A few modules usually contain most of the defects
Explanation
Experience shows that complex or frequently changed areas hide most bugs, a bit like the Pareto principle. Testers use this to focus effort on risky modules.