What is 80/20 rule in software tesing

Kasuni Abegunawardana

Hi all,

I have a basic idea about what is 80/20 rule. But how can we apply it to software testing?

80% results come from 20 % of couses. when we are in software requirement analysis phase we found an defect. Then how can we apply this rule into that?

Thank you!

2 Replies

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Nanddeep Nachan8y ago
Accepted answer
80% of Defects are Caused by 20% of Code
Try to sort bugs by root cause and not by outcome. Grouping all the bugs that made the software crash isn't that helpful. Grouping all the bugs that resulted from module XYZ is more helpful.
Work with developers to look for innovative groupings. For example, 80% of the program's bugs may result from calling the same underlying library. However, that may not be readily apparent from where the bugs occur within the program.
Remember that bugs may result from flawed procedures. For example, a large number of bugs could be present because a developer is using out of date specifications.
Reference: https://www.utest.com/articles/principles-of-testing-the-8020-rule
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Altaf Ansari8y ago
it can work in terms of software testing and quality control:
80% of software quality is maintained by 20% of programmers
80% of bugs in an application are written by 20% of developers
80% of bugs are fixed in 20% of time
20% of a business application accounts for 80% of bugs
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