Usual time course of defect density and productivity in an XY diagram in case of neglected analytical QA (example) September 5, 2019 768 × 454 Displaying Software Development Productivity and Quality in two Dimensions Usual time course of defect density and productivity in an XY diagram in case of neglected analytical QA (example) Usual time course of defect density and productivity in an XY diagram in case of neglected analytical QA (example)