We can divide metrics in testing projects into two types
1. Metrics needed for test manager(some times-clients) for measuring the testing team's performance.
Here we can say
(i) Test Case Efficiency
(ii) Defect Unearthening ratio
(iii) Ratio of 'defects found by testers' Vs 'Defects found in production by non-testers'
etc
2. Metrics needed for development team/other senior management for getting the health of the product / project with respect to testing.
Here again we can divide into two major categories
2.1 Test case wise metrics
(i) No.of test cases planned,executed,passed,failed,blocked etc across builds,modules, phases, dates etc.
2.2 Defect wise metrics
(i) P1,P2,P3,S1,S2,S3 bugs against dates, builds, modules,phases etc.
I have not elaborated metrics in each and every category instead i just figured out the types.
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