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Extreme Programming Installed by Chet Hendrickson, Ann Anderson, Ron Jeffries

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Chapter 6. Story Estimation

Customers need to know how much stories will cost in order to choose which ones to do and which to defer. Programmers evaluate stories to provide that information. Here's how.

If all stories were the same size, it would be easy to steer the project. We'd just do some of the most important stories and make note of how many we could do during an iteration. Then we'd just use that number to set our expectations for next time, and to select what to do by our preferred delivery date.

“Well, we're doing about five stories per week, and there are ten weeks till Comdex. We'll probably get about 50 done. Right now, it looks ...

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