[time-nuts] HP quality

[Brooke Clarke]

Hi:

When I was working there was an on site class that lasted many weeks on 
Statistical Process Control.  The initial part had to do with the 
various ways of measuring groups of products and the charts to display 
the data.  The idea was to get the average and standard deviation for 
each group and plot those two values.  The people doing the work could 
then tell when the product was out of tolerance or about to go out of 
tolerance and they knew how to fix that.  It was management's job to 
change the process in such a way to improve yield.

The much more interesting part of the class involved the management 
implications of SPC.  It turns out that throughout my working career the 
people managing the meetings never did ask the important questions.  For 
more see:
http://www.prc68.com/I/Learning.shtml#Important

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.End2PartyGovernment.com/