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Story Point

Story points are a unit of measurement used in expressing the overall size and complexity of a user story. A point value is assigned to each item. It is an arbitrary measure that becomes meaningful when user stories are delivered against point estimates in a known amount of time; a sprint.

Story points help to:

  • Drive cross-functional behaviour for the whole team, as it represents (collectively) the amount of work for the team as a whole.
  • Produce a ‘pure’ measure of size.
  • Deliver a faster estimate.

Measuring the ‘velocity’ (the number of points delivered by a team in a sprint) allows us to predictably plot project progress over time, even accounting for changing scope.  This assumes consistent estimation, which is why we use planning poker as part of our strategy. 


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