RothenbergerDooleyKulakarniNada03
| Requirements | Design | Implementation | Testing |
|---|---|---|---|
| Fault density | Design defect density | Code defect density | Failure rate |
| Requirements spec change rate | Cyclomatic complexity | Design defect density | code defect density |
| Error distribution | Fault density | Cyclomatic complexity | Coverage factor |
Cleland-HuangChangChristensen03