Douglas Hoffman, Software Quality Methods
Measurement, metrics, and statistics can be powerful tools for understanding the world we live in. Measures and metrics abound in software engineering, QA, and especially testing. Coming up with numbers is the easiest part. Making some computations using the numbers is straightforward. Getting meaningful, useful metrics is a whole different story. Computing metrics is easy to do poorly. It is much more difficult to take measurements and generate truly meaningful and useful metrics or statistics.