Discovering story points

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Discovering story points

  1. 1. Discovering story points
  2. 2. @nadiazemskova
  3. 3. Estimates take time…and they are never precise
  4. 4. Why estimate?
  5. 5. First there were hours
  6. 6. Hours are dependent on individual
  7. 7. Hours are dependent on specialty
  8. 8. Hours are translated into duration
  9. 9. Brook’s law
  10. 10. Wishful thinking
  11. 11. People are bad at estimating time
  12. 12. People are good at comparison
  13. 13. 53 2 1Compare these buildings
  14. 14. User story1 2
  15. 15. Story pointEffort Complexity Uncertainty
  16. 16. Planning poker
  17. 17. Velocity2520151050 1 2 3 4 5 6 7 8
  18. 18. Time-based planning Will have3 x 15 = 45 points3 x 20 = 60 points Might have Won’t have
  19. 19. Scope based planning200 Finish here160 with our best velocity1208040 0 0 1 2 3 4 5 6 7 8
  20. 20. 1. How many hours are in a story point?
  21. 21. It’s a distribution
  22. 22. 2. How to estimate cost?
  23. 23. 6 .. 8 x = .. It’s a range
  24. 24. 3. Whose points are bigger
  25. 25. Only for the same team
  26. 26. Beware of inflation
  27. 27. Establish common baseline
  28. 28. 4. How to calibrate team changes
  29. 29. Change of velocity302010 Team member added0 1 2 3 4 5 6 7 8 9
  30. 30. 5. How to manage the inflow
  31. 31. Burnup chart16012080 Done Scope40 0 0 1 2 3 4 5 6 7 8
  32. 32. 6. How do you get started?
  33. 33. This is a “2”
  34. 34. 7. Why are we back to hours?
  35. 35. These areare These different kind of estimates different units
  36. 36. 8. What do you burn during sprint
  37. 37. Hours Task count Points
  38. 38. 9. What if you don’t have a team?
  39. 39. … plan an imaginary sprint
  40. 40. 10. What if you have different skills?
  41. 41. … velocity will help
  42. 42. … or different teams
  43. 43. Estimate effort, derive duration
  44. 44. nadezhda.zemskova@gmail.comnadezhda.zemskova@nadiazemskovahttp://ua.linkedin.com/in/nadiazemskova

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