Page 203 - Six Sigma Demystified
P. 203
Chapter 8 co n t r o l S tag e 183
can be translated into other processes, even those which seem quite different.
White papers, case studies, project reports, and chat rooms are useful for spread-
ing the word and institutionalizing the findings.
PROjeCT examPle: lessons learned
Lessons learned for this project included:
• add requirement to new product/service introduction procedures to up-
date order fulfillment database with product details.
• The team also identified a few potential improvement opportunities that
were outside the scope of their project.
• add links to support renewal e-mails to encourage use of Web-order form.
• add ability to accept purchase orders to Web-order form.
These were documented in the company’s improvement opportunity database.
Recommended Tools
The following tools (discussed in detail in Part 3) are applicable to the control
stage of DMAIC:
• Flowcharts and process maps help to define the process-level activities nec-
essary.
• Statistical process control (SPC) charts, including C, Np, P, U, Individual-X,
X-bar, and EWMA charts, and the process capability index help to verify
the effects of the improvement.
• Goodness-of-fit tests help to verify the statistical distributions assumed in
the various statistical tools.
• R&R studies help to qualify operators’ proficiency on specific measure-
ment equipment.
In addition, the consensus-building tools noted at the end of Chapter 4 are also
applied as needed.