Mattias skarin what would you do - analysing charts

Mattias skarin what would you do - analysing charts

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  What would youdo? - Learning from charts Oct 3, 2011 Mattias Skarin Kanban / Lean coach www.crisp.se Say Hi to your neighbour! http://blog.crisp.se/mattiasskarin [email protected] Group into 5-8p Choose a team name!
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  Learning objectives Understanding basics of Control charts, continuous flow chart  Put yourself into real shoes – what should be happening  Can you beat the monkey? http://rainbowwallpaper.blogspot.com/2011/04/f unny-monkey-cartoon-pics-monkey-funny.html Mattias Skarin 2
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  Contributions Ismael Héry and Benoit Guillou Henrik Kniberg 2011-10-06 Mattias Skarin 3
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  (Some) valid purposesfor collecting data Every learning starts with  Validating a theory a question  Learning over time  Distinguish between variance and trend  Gain precision All tools needs a purpose. Know ”why” helps avoid expensive tools Mattias Skarin 4
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  Validating a theory Arrived : Arrived tickets this week (green) Resolved : Resolved tickets this week (black) Mattias Skarin 5
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  Validating a theory 100% 90% 80% 70% 60% 50% Value demand 40% Failure Demand 30% Average 28 % 20% 10% 0% Sprint 1 Sprint 2 Sprint 3 Sprint 4 Sprint 5 Sprint 6 Sprint 7 Data devteam 2009 Mattias Skarin 6
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  CHARTS BASICS 2011-10-06 Mattias Skarin 7
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  Continuous flow chart Started Stories Delivered Cycle time WIP Time Mattias Skarin 8
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  Control charts Variable + 3σ Average - 3σ Observation Mattias Skarin 9
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  Goal: separate expectedevents from unexpected 99.7 % of observations occurs within three std dev. of the mean 95 % occurs within two std. dev of the mean 68 % occurs within one std. dev of the mean (Assuming normal distribution) Mattias Skarin 10
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  Can you beatthe monkey? LEARNING FROM CHARTS 2011-10-06 Mattias Skarin 11
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  Learning from realcases There can be multiple solutions to any problem You are self organizing! You need to motivate your choice I get to play god.. Thou are allowed to ask questions! Mattias Skarin 12
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  Organize Groups of 5-8 Keep score Pick a team name Mattias Skarin 13
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  The case Sprint 1 Sprint 2 Sprint 3 The problem: Why do we always work with 5 projects in parallell although we plan for two? Mattias Skarin 14
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  What should behappening? 25 20 15 To do In Dev To test 10 Done 5 0 1 2 3 4 5 6 7 Mattias Skarin 15
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  25 40% Todo (waiting) 50 % Coding 20 10% Testing 33% Todo (waiting) 17 % Coding 15 50% Testing 10 To do In Dev 5 To test Done 0 1 2 3 4 5 6 7 Mattias Skarin 16
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  What should behappening? A. Assign a WIP on number of projects B. Pair program if you get stuck C. Hold back specification, until just before development D. Deliver, when testing is complete E. Other Mattias Skarin 17
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  More examples existsbut for now only demoed live Mattias Skarin 18
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  What can triggerchange? Gradual Questions – someone asking them New ideas – how to do it better Consequence awareness – ”this will happen if change does not take place” Consolidation – a momentum grows large enough to overcome the threshold Fast Will to experiment – someone willing to give it a try A failure – ”uh-uh that didn’t work” Mattias Skarin 19
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  Some final thoughts Charts + Situation knowledge = learning Useful in times of stress Keep it simple. Plot on your whiteboard. Not all facts trigger change Human action is required Mattias Skarin 20
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  Thank you! ”Change is not necessary. Survival is optional” - W. E Deming Mattias Skarin 21