Metrics

COST OF QUALITY (COQ) is a measure that quantifies the cost of control/conformance and the cost of failure of control/non-conformance. In other words, it sums… Read More »Cost of Quality

DEFECT DETECTION EFFICIENCY (DDE) is the percentage of defects detected during a phase/stage divided by the total number of defects. Or, it can also be… Read More »Defect Detection Efficiency

DEFECT DENSITY is the number of confirmed defects detected in software/ component divided by the size of the software/ component. ISTQB Definition defect density: The… Read More »Defect Density

DEFECT AGE is a measure of the difference between defect detection and defect injection. It can be measured in terms of Time or Phases. Defect… Read More »Defect Age