The calculation for Escaped Defects typically involves counting the number of defects found after the software has been released to the end users and comparing it to the total number of defects found during the testing and development phase.
The formula for Escaped Defects is:
Escaped Defects = (Number of Defects Found After Release / Total Number of Defects Found) * 100%
It is calculated by measuring the number of defects found after the software has been released to the end users and dividing that by the total number of defects found during the testing and development phase. The result is then multiplied by 100% to express the result as a percentage.
For example, if during the testing and development phase the team found 100 defects and after the release another 10 defects were found by the end-users, the escaped defects percentage would be 10%.
It’s important to track the number of escaped defects over time, compare it against industry benchmarks, and track it by different segments, such as by different teams, products, or customers, in order to identify where the problem is and take action to reduce the number of escaped defects.
It’s also important to keep in mind that Escaped defects are not only found by the end-users but also by the customer support team, and the calculation should take that into account as well.
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