Appendix A. Codermetrics Quick Reference

The following is a table of all the metrics introduced in this book.

Table A-1. Codermetrics quick reference

MetricDescriptionFormula
PointsMeasure the overall productivity of each coder on assigned tasksPoints = Sum (Complexity for all completed tasks)
UtilityMeasure how many assigned tasks each coder completesUtility = Number of tasks completed
PowerMeasure the average complexity of the tasks that a coder completesPower = Points / Utility
AssistsMeasure the amount of coder interruptions and how much a coder helps othersAssists = Sum (Interrupts) + Sum (Helps)
TemperatureMeasure how “hot” or “cold” a coder is at any given timeStart with Temperature = 72; thereafter Temperature = Previous Temperature × (Current Points / Previous Points)
O-ImpactProvide a single “Offensive Impact” number that summarizes the contributions of a coder in moving projects alongO-Impact = Points + Utility + Assists
SavesMeasure how often a coder helps fix urgent production issuesSaves = Number of Product Issues with the highest Severity that a coder helps fix
TacklesMeasure how many potential issues or opportunities a coder handles proactivelyTackles = Number of Pluses where coder demonstrates initiative or innovation
RangeMeasure how many areas of software a coder works onRange = Number of Areas Worked by a coder
D-ImpactProvide a single “Defensive Impact” number that summarizes the contributions of a coder in helping to avoid large problemsD-Impact = (Saves + Tackles) × Range ...

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