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ch07.ppt - University of Rhode Island · PDF file0.20 0.15 0.10 0.40 0 0.35 Machine adjustments 0 0.30 0.55 0.50 0.45 Revised New material UCL New operator Points not included in control

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Example 1

Example 3

121110987654321

0.09

0.08

0.07

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0.05

0.04

0.03

0.02

0.01

0.00

Sample

Pro

po

rtio

n

_P=0.03

UCL=0.08118

LCL=0

P Chart of Nonconforming

121110987654321

9

8

7

6

5

4

3

2

1

0

Sample

Sam

ple

Co

unt

__NP=3

UCL=8.118

LCL=0

NP Chart of Nonconforming

Example 4 - c chart

Example 4 - u chart

252219161310741

40

35

30

25

20

15

10

Sample

Sam

ple

Co

unt

_C=22.44

UCL=36.66

LCL=8.23

C Chart of Nonconformity

252219161310741

0.40

0.35

0.30

0.25

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0.10

Sample

Sam

ple

Co

unt

Per

Unit

_U=0.2244

UCL=0.3666

LCL=0.0823

U Chart of Nonconformity