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Six Sigma & Test Process Improvement Nederlandse Testdag November 29 th 2007 Alessandro Di Bucchianico & Ed Brandt.

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Presentation on theme: "Six Sigma & Test Process Improvement Nederlandse Testdag November 29 th 2007 Alessandro Di Bucchianico & Ed Brandt."— Presentation transcript:

1 Six Sigma & Test Process Improvement Nederlandse Testdag November 29 th 2007 Alessandro Di Bucchianico & Ed Brandt

2 © Refis-TU/e - 2007 Content Process improvement Basics of Six Sigma Six Sigma and CMM, GQM, etc. Discussion: “Six Sigma and the Improvement of Test Processes”

3 © Refis-TU/e - 2007 Process Improvement Market penetration Product development Diversification Market development market product (Product/market grid by Ansoff)

4 © Refis-TU/e - 2007 Basics Six Sigma

5 © Refis-TU/e - 2007 Basics Six Sigma

6 © Refis-TU/e - 2007 Six Sigma drive for defect reduction Based on the "statistical thinking" paradigm: 1)Everything is a process 2)All processes have inherent variability 3)Data is used to understand the variability and drive process improvement decisions

7 © Refis-TU/e - 2007 Six Sigma model

8 © Refis-TU/e - 2007 Other models CMM PSP GQM 6 

9 © Refis-TU/e - 2007 Six Sigma and TPI ®

10 © Refis-TU/e - 2007 Can TPI benefit from Six Sigma? What are the products of a test process? How should we measure defects? Which specification limits do we recognize? How do we start?

11 © Refis-TU/e - 2007 Products of a test process? Defects log Adequately functioning system Test cases Test report Test metrics Improvement suggestions for the system Test plan Entries made on the fly during the presentation based on discussion and comments from the audience.

12 © Refis-TU/e - 2007 How to measure defects? Defects in defects logging Traceability Test cases Entries made on the fly during the presentation based on discussion and comments from the audience.

13 © Refis-TU/e - 2007 Specification limits? Time To Repair Test costs … Entries made on the fly during the presentation based on discussion and comments from the audience.

14 © Refis-TU/e - 2007 Some sample metrics 1 Number of test defects per FP

15 © Refis-TU/e - 2007 Some sample metrics 2 Test failure intensity

16 © Refis-TU/e - 2007 How do we start?


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