Estimating user stories is central to the Agile planning process. An estimate is a measure of the relative size, in terms of effort, of a story. These estimates help answer questions such as: • How many stories can we fit into the release? • How many stories will be completed in the next iteration? • What are the impacts of adding, removing and changing stories? What you’ll learn in this presentation: • How estimates are used on Agile projects. • How to define estimates. • The basics of planning poker to help estimate.