Quantitative metrics
In this section, we'll look at measurements that track quantities.
Team velocity
Calculate the velocity for an Agile team by adding together all of the estimates for the completed User Stories in a Sprint. For example, if the team is using Story Points to estimate and complete five User Stories with estimates of 5, 2, 2, 3, and 1 respectively, then their velocity is 5 + 3 + 2 + 2 + 1 = 13.
If our team is estimating T-shirt sizes, it's not possible to say your velocity is 1L + 1M + 2S + 1XS, as this isn't easy to translate from Sprint to Sprint. Instead, assign numbers to each t-shirt size, for example, XS=1, S=2, M=3, L=5, and XL=8. Apply this method to any sizing system that doesn't use numbers.
Velocity is a metric that is used by the team for forecasting. For instance, during Sprint Planning we use it to gauge how many User Stories we think we can compete with in the upcoming Sprint.
We can use velocity in one of two ways. The first is by averaging the velocity from recent...