II
MetrIcs
Deriving metrics from data is the key to observation and understanding. Metrics
endow people with objective observations and deeper understanding. In Section
II of this book, Chapter 5 is devoted to deriving metrics from data to gain this
advantage.
Common metrics for all life cycle phases are not an eective approach.
Compartmentalizing metrics helps. A simple way of doing this is to separately dis-
cuss development metrics, maintenance metrics, and test metrics. Chapters 6, 7,
and 8 are devoted to these three categories of metrics.
e advent of agile methods has redened the way life cycles are managed and
measured. Chapter 9 addresses agile metrics.