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Six Sigma Case Studies with Minitab®
book

Six Sigma Case Studies with Minitab®

by Kishore K. Pochampally, Surendra M. Gupta
February 2014
Intermediate to advanced content levelIntermediate to advanced
318 pages
8h 6m
English
CRC Press
Content preview from Six Sigma Case Studies with Minitab®
81
6
Process Capability Analysis at a
Manufacturing Company
This case study is about a Six Sigma project implemented by the production
manager at a manufacturing rm that produces a critical automobile part
used in cars produced by three major automobile companies. The produc-
tion manager aims to improve the capability of the manufacturing process.
Recall the following process capability ratios from Chapter 2.
=
σ
=
µ−
σ
=
−µ
σ
=
C
USL LSL
C
LSL
C
USL
CC
C
6
3
3
MIN{
,}
p
pl
pu
pk pl pu
where
USL = Upper specication limit
LSL = Lower specication limit
µ = Process mean
σ = Process standard deviation
The higher the C
p
and C
pk
values are, the better the process is.
Section 6
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Publisher Resources

ISBN: 9781482205572