Replying to LO29913 --
> Another point to remember about Six Sigma is what it assumes:
> - an adequate metric of a repeatable process,
> - a well-defined "ideal" value of the metric,
> - and that it makes sense to compare measurements made over time
My colleagues at one of the larger publsihing houses certainly believe in
the value of a stable, well-defined process. Before implementing six-sigma
they undertook an extensive process of teaching their floor leadership the
analytical tools they would need (most were also in the old TQM toolbox),
then documenting amd standardizing their processes, then reducing their
process variability to an acceptable level. Once special causes had been
virtually eliminated, they then felt that the value of 6-sigma could begin
to kick in. If the truth be known though, my suspicion is that by this
time they had already extracted 90% of the value to be obtained.
Regards
Gerald Burch
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