Agile estimate size

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Estimating size for Agile

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Agile estimate size

  1. 1. 1 2 0 1 3 – J u n B y : M o h a m e d S a a d
  2. 2.  Estimating Size with Story Points  Estimating in Ideal Days  Techniques for Estimating  Choosing between Story Points and Ideal Days 2
  3. 3.  Story Points Are Relative › Story points are a unit of measure for expressing the overall size of a user story, feature, or other piece of work. › Get Started with smallest or medium user story. 3
  4. 4.  Velocity › Is a measure of a team’s rate of progress. › Velocity Corrects Estimation Errors. 4
  5. 5.  Ideal time vs. Duration.  Ideal Time and Software Development. › The story being estimated is the only thing you’ll work on. › Everything you need will be on hand when you start. › There will be no interruptions.  Ideal Days as a Measure of Size.  One Estimate, Not Many. 5
  6. 6.  Estimate Accuracy vs. Effort 6
  7. 7.  Estimates Are Shared › estimates are best derived collaboratively by the team, which includes those who will do the work. There are two reasons for this.  The Estimation Scale › “1, 2, 3, 5, and 8” or “1, 2, 4, and 8”. › Could include “0”. 7
  8. 8.  Deriving an Estimate › Expert opinion › Analogy › Disaggregation  Planning Poker › Smaller Sessions › When to Play Planning Poker 8
  9. 9.  Considerations Favoring Story Points › Story points help drive cross-functional behavior. › Story-point estimates do not decay. › Story points are a pure measure of size. › Estimating in story points typically is faster. › My ideal days are not your ideal days. 9
  10. 10.  Considerations Favoring Ideal Days › Ideal days are easier to explain outside the team. › Ideal days are easier to estimate at first. 10
  11. 11.  Agile Estimating and Planning by Mike Cohn. 11

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