Dan's Blog - Velocity Matters

and, for the curious, the post includes the formula for velocity straight from the code

Last week, we made a slight tweak to how velocity is calculated in Pivotal Tracker , to handle team strength overrides in a simpler, more explainable way. As a result, if your project has an adjusted team strength in a recent iteration, you may be seeing a slightly different velocity. Details of how velocity is calculated, and how team strength affects it, are at the end of this post. This seems like a good opportunity, though, to step back a bit, and revisit the velocity concept in Tracker and why it (still) matters. Read on, even if you’re an old hat to agile and Tracker! What is Velocity? First, let’s re-define what velocity is. Christian Niles, our iOS engineer, recently gave it an eloquent description (inspired by his recent relaxed strolls through the streets of Paris): “Just like a speedometer that measures how fast you're hurtling through space, Tracker's velocity ...

Full article: http://pivotallabs.com/users/dan/blog/articles/2222-veloc...