Nine Pregnant Women¶

We look for two time-correlated events - see attached picture for illustration

• positive spike in "normalized team size" i.e. by how many % team grows when new people join; only committers are considered team members
• drop in "normalized feature delivered rate" by feature and bugfixing tickets closed as DONE
• (supplemental metric) increase in bugreport rate of bugs reported on code contributed by new members
• (supplemental metric) decrease in code quality metrics -- e.g. by Vaxjo team approach