Feedback is not the same as prediction. Data does not tell us what to do – it simply indicates a problem. Feedback underpins much of the Agile Manifesto. Acting on feedback is how we deliver iteratively, and opportunities for feedback are formalized in many Agile practices, from pair programming in XP, to Scrum
Why would you want to use measurements if you are adopting agile? Because top executives would like to know how projects will turn out before spending money on them, and measuring results helps to improve future predictions. Capers Jones shows how you can measure productivity and quality, and looks at agile practices that have proved to be beneficial for teams.
Carlos Sirias provides a set of metrics that he and his teams were able to use independent of software methodology. 8