RE: The rationale for substantive knowledge of underlying process

[Steven_S_Prevette@rl.gov]

>Based on my experience the idea that
>7th graders could set up these charts is pure rubbish.

It might be worth looking at Patrick's science project on pages 208-209 of
TNE.  Dr. Deming states Patrick was age 11 when he performed an analysis of
school bus arrival times.  Granted, there is not a formal control chart, but
the concept is there, and special cause variation has been separated from
common cause variation, and knowledge of the process has been applied.

I know I had to do plots of data in 7th grade science and get out a ruler
and fit a best-guess line through the data.  Why couldn't control charts be
taught as part of High School science?

Steve Prevette
QA Engineer, ESH Radiological Compliance
Fluor Hanford, A Fluor Global Services Company
ASQ Certified Quality Engineer
steven_s_prevette@rl.gov
509-373-9371