1 / 13

The “Matrix”

The “Matrix”. Dave Whalen Whalen Technologies. Overview. Quick Review: Triage Severity vs. Priority What is the “Matrix”? Why do we need the Matrix? Using the Matrix. Quick Review – Triage. French – “sorting”

zonta
Download Presentation

The “Matrix”

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The “Matrix” Dave Whalen Whalen Technologies

  2. Overview • Quick Review: Triage • Severity vs. Priority • What is the “Matrix”? • Why do we need the Matrix? • Using the Matrix

  3. Quick Review – Triage • French – “sorting” • A system used by software development teams to ration limited technical resources when the number of defectsneeding resolution exceeds the resources available to correct and verify them so as to resolve the greatest number of defects possible. (My definition)

  4. Severity vs. Priority • Often use interchangeably • NOT THE SAME THING! • Severity – defines the impact the defect has on the customer and likelihood of occurrence • Obscure Fatal System Error vs. Spelling Error • Priority – determines the order in which defects will be fixed/resolved and retested • Obscure Fatal System Error vs. Spelling Error

  5. Determining Severity & Priority • Initially defined during defect discovery • Validated during “Triage” • Ordinal data • Not numeric, relative ranking only • Highly subjective! • How many levels? • Between 4 & 5 • Odd vs. Even • Order (1-4, 4-1)

  6. Priority • Defects should be resolved based on Priority NOT Severity! • Answers 2 Questions: • What do we fix? • When do we fix it? • Based on: • Impact on the Customer (Impact or Severity) • Resolution Difficulty (Difficulty) • Time • Resources

  7. The “Matrix” • Visual tool or … • “Mental” process • Assists in evaluating and prioritizing defect resolution • Ranking • 2 Factors: • Difficulty (x-axis) • Severity/Impact (y-axis)

  8. The “Matrix” – What To Fix? • Assess defects in terms of: • Difficulty – 4 levels • Severity/Impact – 4 levels • Plot results • 16 possible points • Note: no fence-sitting

  9. The “Matrix” – What To Fix? • Assign Priority based on Quadrant (Q-Score) • Q-Score = Priority • QI = Priority 1 • QII = Priority 2 • QIII = Priority 3 • QIV = Priority 4 • Additional ranking within a Quadrant

  10. The “Matrix” – When To Fix It? • QI - Priority 1 • Low Difficulty, High Impact • Fix it Now! • QII – Priority 2 • High Difficulty, High Impact, • Prior to next build

  11. The “Matrix” – When To Fix It? • QIII – Priority 3 • Low Difficulty, Low Impact • Defer to next minor release (dot release – 1.1, 1.2, 1.3, etc.) • QIV – Priority 4 • Low Difficulty, High Impact • Defer to next major release (2.0, 3.0, 4.0, etc.)

  12. Summary • Quick Review: Triage • Severity vs. Priority • What is the “Matrix”? • Why do we need the Matrix? • Using the Matrix

  13. Questions? • Contact Information • Email • david.whalen@comcast.net • Instant Messenger • MSN: david.whalen@comcast.net • Yahoo: dave_whalen14@yahoo.com • More Stuff • www.stickyminds.com • Search on “whalen”

More Related