I had not heard of such a chart and did not see anything on Peltier's
page, useful tho' it usually is. However, there are numbers of hits for
Levey Jennings and such a standard deviation chart does not look too
hard to produce.
--
James Silverton
Potomac, Maryland
Email, with obvious alterations: not.jim.silverton.at.verizon.not
The Levy-Jennings charts are the Clinical Lab version of Shewhart
Multi-Rule charting -- Med Techs are used to calling them via the Levy-
Jennings name, so I've noticed there is a bit of translation when
talking to people that have learned process control in another
industry! Ahh the cross-pollination of QC charting!
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