One excellent book on capability and SPC in general in John Oakland's
book "Statistical Process Control". I'm in the UK and I'm not sure how
widely available it is. John Oakland is the closest us Brits have to a
"Quality Guru"!!!
Neil Atkinson
Quality Manager
Stadium Electronics Controls
----------
From: Ronald J. Rhodes [SMTP:[log in to unmask]]
Sent: 25 February 1999 14:12
Subject: Additional Cpk Questions
Hi All,
I have two questions for those of us that use Capability
Potential and
Capability Performance Indices.
1) When the mean of the data falls outside the specification
limits, is
Cpk negative or zero?
2) Does anyone have specific references that delve into the
details
of Cp and Cpk?
Thanks for your help.
Ron Rhodes
Conductor Analysis Technologies Inc.
Phone: 732-424-1919
Fax: 732-424-1886
Email: [log in to unmask]
Web: http://biz.swcp.com/cat
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