Agile Estimating. Mike Cohn. Agenda. What is agile planning? Story points Ideal time. NDC London 6 December Copyright Mountain Goat Software

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1 Aile Estimat Mike Cohn NDC London 6 December Aenda What is aile plann? Story pots Ideal time Poker nn la P h it w at im Est 2

2 Product Backlo Iteration Backlo 3 Code the UI 12 Write tests Code middle tier Update docs 6 Automate tests We re talk about these riht now 3 4 How lon will it take to drive to Moscow? to read the last Harry Potter book?

3 Estimate size; derive duration Size Calculation Duration 300 kilorams Velocity =20 300/20 = 1 iterations Measures of size Traditional measures of size Les of Code Function Pots Aile measures of size Story pots Ideal days 6

4 Story pots How lon a user story will take (eﬀort) Influenced by complexity, uncertaty, risk, volume of work, etc. Relative values are what is important: A lo screen is a 2. A search feature is an. Basic math properties should hold + = 10 7 Estimat zoo pots Lion Kanaroo Rhoceros Bear Giraffe Gorilla Hippopotamus Tier

5 Aenda What is aile plann? Story pots Ideal time Poker nn la P h it w at im Est 9 10 Ideal Time How lon someth will take if: it s all you work on no one terrupts you and everyth you need is available

6 Elapsed time vs. ideal time Ideally But stead Monday has hours Each week has 40 hours Each day has someth like: 2 hours of meets 2 hours of 4 hours left for the project How lon will this take? Are you answer what is be asked? 11 Two bi advantaes to story pots 1 Story pots are additive; time-based estimates may not be 2 Story pots help avoid problems with unit confusion 12

7 Confus units Product Backlo Iteration Backlo 30 Code the UI 12 0 Write tests 0 Code middle tier Update docs 6 Automate tests 13 Aenda What is aile plann? Story pots Ideal time Poker nn la P h it w at im Est 14

8 Plann Poker An iterative approach to estimat Steps Each estimator is iven a deck of cards, each card has a valid estimate written on it Customer/Product owner reads a story and it s discussed briefly Each estimator selects a card that s his or her estimate Cards are turned at the same time Discuss diﬀerences (especially outliers) Re-estimate until estimates convere 1 Plann Poker an example Estimator Round 1 Round 2 Ana Trond Maria Johannes

9 Estimate these Product Backlo Items Estimate Read (and understand) a hih-level, 10-pae overview of aile software development a celebrity news maaze. Read (and understand) a densely written -pae research paper about aile software development an academic journal. Your uncle owns a clock store and wants to sell clocks over the ternet. Write a basic product backlo for him cover what he ll need his website to do. Recruit, terview, and hire a new member for your team. Create a 60-mute presentation about aile software development for your coworkers. Wash and wax your boss Porsche. Read (and understand) a 10-pae book on aile software development. Write a -pae summary of this conference for your boss Free, or I wouldn t mention it 1

10 Mike Cohn twitter: mikewcohn () 61-AGILE 19

Agile Estimating and Planning

Agile Estimating and Planning [material inspired by Agile Estimating and Planning by Mike Cohn] Laurie Williams North Carolina State University williams@csc.ncsu.edu This lecture material is copyrighted