Re: Cp calculations for unilateral tolerances/G'house

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#53

From: GrantBlair
Date: Fri, 24 Jul 1998 00:00

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In a message dated 7/24/98 11:58:52 AM Eastern Daylight Time,
FIsackson@AOL.COM writes:

<< Such an invocation is quite unnecessary. If the data are unimodal and
 apparently non-normal, Chebycheff's inequality will serve quite well to
 make a reasoned estimate of the upper (or lower) limit of the
 distribution >>
It is generally accepted that Cpk's greater than 3 (+9 sigma limits) are
acceptable
regardless of distribution shape or  process stability. This also follows from
Tchebycheff's
inequality. One reference source is the newly revised QS-9000 standard, which
mentions Cpk>3.0

grantblair@aol.com
Ninety Six SC

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From: GrantBlair@aol.com
Subject: Re: Cp calculations for unilateral tolerances/G'house
Date: 1998/07/24
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