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Introduction to Agile Estimation & Planning
The document discusses estimation and planning in Agile methodologies, highlighting the importance of story points and various estimation techniques like planning poker. It emphasizes the need for relative measures of effort to improve accuracy and discusses how to estimate for tasks and plan iterations effectively. Additional resources for agile planning are also provided.
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Introduction to Agile Estimation & Planning
- 1. Plans are nothing; planningis everything. Dwight D. Eisenhower
- 2. Introduction to Estimatingand Planning in Agile Natasha Hill & Amaad Qureshi
- 3. About us Natasha Hill •Scrum Master • Agile Coach • Agile Enthusiast • Organiser – Psychology of Agile Scrum Meet-up Group Amaad Qureshi • Business Development Manager • Certified ScrumMaster • Certified Scrum Product Owner • Organiser – Agile Connexions Meet-up Group • Co-organiser – Agile 101, AppsJuction Meet-up Groups
- 4. Agenda • Planning inAgile • Story points vs ideal days • Estimating techniques • Velocity
- 5. What is Estimationin Agile? Estimation in Agile is a method of measuring how long it will take to complete a user story or a task.
- 6. What is aStory Point? Story point is a relative measure of effort.
- 7. How tall arethese buildings? Great Pyramid CN Tower The Shard Giza Paris Toronto Kuala Lumpur London Dubai 139.5m 324m 828m 553m 452m Eiffel Tower Petronas Towers Burj Khalifa How tall are these buildings? Relative vs absolute estimating 2 309m
- 8. Story Points • Mostpopular in Agile • Relative measures of effort • Usually assigned using: Fibonacci ( 0, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...) Modified Fibonacci ( 0, ½, 1, 2, 3, 5, 8, 13, 20, 40, 100, ...) Powers of 2 ( 0, 1, 2, 4, 8, 16, 32, 64, ...) • Basic math properties apply 5+5=10=5+3+2
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- 10. We can estimatein: • Story points • Ideal days (without any disruptions) • Hours • T-shirt sizes • Beer sizes • Custom sizes
- 11. We recommend estimating Tasks TasksTasks Tasks Tasks Tasks Tasks TasksTasks Tasks Tasks Tasks Tasks TasksTasks Tasks Tasks Tasks InT-shirt sizes In Story Points In Hours Less detail More detail
- 12. Product Backlog Less detail Moredetail Rowan Bunning @2013
- 13. How do weestimate? Planning Poker®- an iterative approach to estimating Steps: • Each estimator has a deck of cards with estimates on them • A story is read and discussed briefly • Each estimator selects a card that’s his or her estimate • Cards are turned over so all can see them • Discuss differences • Re-estimate if necessary • Each card deck has: too large, break and ‘?’
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- 16. Challenge: estimate thesize of the animals in a zoo in story points • Lion • Kangaroo • Rhinoceros • Bear • Giraffe • Gorilla • Hippopotamus • Tiger
- 17. Other estimation techniques •Gut feeling • Triangulation • Relative estimation • Disaggregation • Three, two, one... 4 2 Large = 3 1 2 3 1 2 = 12 2
- 18. When do weestimate? Release planning Iteration or sprint Daily Planning Refinement Iteration Planning
- 19. Velocity • Units ofwork per iteration • Can be planned and observed • Takes a few iterations to stabilise • Should not be used to measure progress or to compare teams Iteration 1 1 3 1 3 1 2 Iterations Velocity is measured in the units you use to estimate your user stories
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- 21. Challenge: plan eachiteration 1. Lion 20 2. Kangaroo 13 3. Rhinoceros 30 4. Koala Bear 5 5. Giraffe 40 6. Gorilla 20 7. Hippopotamus 30 8. Tiger 20 Iteration 1 Iteration 2 Iteration 3 Iteration 4 Iteration 5 Iteration 6 Priority Story points
- 22. Capacity Capacity = Numberof people in the project x hours on the project i.e. take away: holidays, meetings, client’s issues, etc.
- 23. Iteration planning • Wholeteam • Look at historic velocity • Calculate capacity • Pick story by story, discuss • Commit to the right amount of work Iteration Units of work 1 13 2 15 3 14 4 16 5 0 6 30 7 16 8 15 9 6 10 25 0 5 10 15 20 25 30 35 1 2 3 4 5 6 7 8 9 10 0 10 20 30 40 1 2 3 4 5 6 7 8 9 10 The more you estimate, the more accurate you will get! velocity velocityiterations iterations
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- 25. Free Resources • Trello.com– Free organizing tool, great for backlogs and story boards • Planning Poker.com • Pointingpoker.com • Mountaingoatsoftware.com • Romanpichler.com
- 26. Credits • Images: ©Mike Cohn, 2015 • Mountaingoatsoftware.com • Book:
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