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Re: Backlog and Sprint Estimation

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  • woynam
    ... Grrr. I wish Yahoo had an edit button. I should have said I wouldn t expect them to be an order of magnitude apart.
    Message 1 of 4 , Mar 29, 2010
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      --- In scrumdevelopment@yahoogroups.com, "woynam" <woyna@...> wrote:
      >
      >
      > No, there's no formal relationship. Items in the product backlog are estimated prior to the Sprint Planning Meeting (SPM).
      >
      > At the SPM, items (i.e. stories, features, activities) are broken down into individually estimated tasks. These estimates are typically closer to reality than the story-level estimates, as they include more detail.
      >
      > Now, I wouldn't be surprised if there was a close correlation between item-level and task-level estimates. If two stories were estimated at 5 points apiece, I'd be surprised if the sum of their task-level estimates weren't close. The estimates wouldn't necessarily be identical, but I would expect them to be an order of magnitude apart.

      Grrr. I wish Yahoo had an edit button. I should have said "I wouldn't expect them to be an order of magnitude apart."


      >
      > Over time, I would imagine that a team could create a table that maps story points into task days/hours. However, this would be rather pointless, and I don't recommend it. A team's velocity should be the key metric in determining the amount of work to commit to in a Sprint.
      >
      > Mark
      >
      > --- In scrumdevelopment@yahoogroups.com, "dsrkkk" <dsrkkk@> wrote:
      > >
      > > Hi,
      > > Is there any relationship between backlog items estimation and sprint
      > > items estimation?
      > > dsr
      > >
      >
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