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“Sufficient Quality”

“Sufficient Quality”. Recognising when enough is enough. Presentation by Michael Henderson BSc, GDArts , PMP. 25 th July 2013. Purpose and Background. Why address this question at all? To understand the nature of negotiation. How to decide what is enough.

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“Sufficient Quality”

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  1. “Sufficient Quality” Recognising when enough is enough. Presentation by Michael Henderson BSc, GDArts, PMP 25th July 2013

  2. Purpose and Background Why address this question at all? To understand the nature of negotiation. How to decide what is enough. What tools and techniques exist in support of this? Questions and Answers / discussions (Q: Why does a French man only have one egg for breakfast?) Sufficient Quality

  3. Roles of Stakeholders Typically managing in a single dimension: • Sponsor: Controlling Cost. Less is more. • Business Owner: Champion of scope. More is more. • Test Manager: Champion of Quality. More is more. Typically managing in multiple dimensions: • Project Steering Committee • Project Manager Sufficient Quality

  4. Project Management is like a mixing desk: • Sliders - Scope, Quality, Cost, Schedule • Each slider impacts on other sliders • Some are fixed, and some move in relation to others • Project Manager tries to reach the correct blend Sufficient Quality

  5. Relationship Between Cost and Quality Quality Perfection Sufficiency Cost • Logarithmic/Exponential Function • 20/80 Rule • Pareto Rule Sufficient Quality

  6. Getting closer to the target? Quality Perfection Budget Cost Quality Perfection Budget Cost Sufficient Quality

  7. What is enough? Law based answer: When the quality meets the acceptance criteria Golden ruleanswer: When the customer or test manager accepts the quality is sufficient to go live Sufficient Quality

  8. Typical Acceptance Criteria • When no high severity defects exist • When only a certain number of medium severity defects exist • Etc etc ... But what is the definition of “medium”? Sufficient Quality

  9. Defect Prioritisation • Impact • Frequency • Severity • Cost to resolve • Value to resolve Sufficient Quality

  10. Purpose of Prioritisation sessions • Not to redefine Acceptance Criteria. • To negotiate and reclassify defect severity so that the acceptance criteria are met at the right time. Sufficient Quality

  11. Typical Prioritisation Team • Test Manager (Meeting driver, Cost to test) • Project Manager (Negotiation Facilitation) • Business Owner/ Business Analysts (Impact) • Technical Development Lead (Cost to resolve) Sufficient Quality

  12. When to conduct Prioritisation Meetings? • Introduce the purpose at the beginning of the project. • Introduce sessions after first complete pass of test, when all blocking defects are resolved. • Frequency. Weekly by default. Or more frequently closer to implementation date. Sufficient Quality

  13. Finally... A Frenchman only eats one egg for breakfast because... one egg is “Un œuf”! Thank you for listening. Let un œuf be un œuf! Sufficient Quality

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