Track Reliability Growth of Developed Software
1. Input failure data to reliability estimation program such as CASRE [4], execute, plot FI / FIO ratio
2. If FI / FIO ratio very large with regard to scheduled release, consider deferring features, rebalancing objectives for major quality characteristics, and increasing test and debugging resources
3. If significant upward trend in FI / FIO ratio, determine and correct causes, which may be system evolution or changes in test selection probability
4. Consider releasing system when FI / FIO = 0.5