Attribute_study_report Np Chart Format
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Control Chart for Attribute Data - "Initial Study" P
Plant Department 10.000 9.500 9.000 8.500 8.000 7.500 7.000 6.500 6.000 5.500 5.000 4.500 4.000 3.500 3.000 2.500 2.000 1.500 1.000 0.500 0.000 Colum nB
np
●
c
u
Part Number
Operation number and Name
Colum nC
Colum nD
Colum nE
Colum nF
Colum nG
Colum nH
Colum nI
Colum nJ
Colum nK
Colum nL
Part Name
Colum nM
Colum nN
Colum nO
Colum nP
Colum nQ
Colum nR
Colum nS
Colum nT
Colum nU
Colum nV
Colum nW
Colum nX
Colum nY
Colum nZ
SAMPLE n
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
NUMBER ( np, c )
2
5
4
3
3
6
5
0
7
5
4
1
2
3
6
3
8
4
4
4
6
4
2
3
7
0.032
0.081
0.065
0.048
0.048
0.097
0.081
0.000
0.113
0.081
0.065
0.016
0.032
0.048
0.097
0.048
0.129
0.065
0.065
0.065
0.097
0.065
0.032
0.048
0.113
PROPORTION ( p, u )
62
Date Shift / Time ANY CHANGE IN IN PEOPLE, MATERIAL EQUIPMENT, METHODS, ENVIRONMENT, OR MEASUREMENT SYSTEMS SHOULD BE NOTED. THESE NOTES WILL HELP YOU TO TAKE CORRECTIVE OR PROCESS IMPROVEMENT ACTION WHEN SIGNALLED BY THE CONTROL CHART DATE
TIME
COMMENTS
np1+np2+………+npk K
Average proportion nonconfroming np =
np
UCLp
=
A point above the upper control limit (higher proportion nonconforming is generally a sign of one or more of the following 1. The control limit or plot point are in error 2. The process performance has worsened, either at that point in time or as part of a trend 3. The evaluation system has changed (e.g., inspector, gauge)
4.0400
A point below the lower control limit (lower proportion nonconforming) is generally a sign of one or more of the following 1. The control limit or plot point are in error 2. The process performance has improved (this should be studied for improvements that might be incorporated on a parmanent basis) 3. The measurement system has changed
UCLnp
=
np + 3
np ( 1 - np/n)
=
9.8702
LCLp
=
np - 3
np ( 1 - np/n)
=
-1.790
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
2
5
4
3
3
6
5
0
7
5
4
1
2
3
6
3
8
4
4
4
6
4
2
3
7
p
4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400
LCLp
0.000
** Green cell only to be filled
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
Plant Department 10.000 9.500 9.000 8.500 8.000 7.500 7.000 6.500 6.000 5.500 5.000 4.500 4.000 3.500 3.000 2.500 2.000 1.500 1.000 0.500 0.000 Colum nB
np
●
c
u
Part Number
Operation number and Name
Colum nC
Colum nD
Colum nE
Colum nF
Colum nG
Colum nH
Colum nI
Colum nJ
Colum nK
Colum nL
Part Name
Colum nM
Colum nN
Colum nO
Colum nP
Colum nQ
Colum nR
Colum nS
Colum nT
Colum nU
Colum nV
Colum nW
Colum nX
Colum nY
Colum nZ
SAMPLE n
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
62
NUMBER ( np, c )
2
5
4
3
3
6
5
0
7
5
4
1
2
3
6
3
8
4
4
4
6
4
2
3
7
0.032
0.081
0.065
0.048
0.048
0.097
0.081
0.000
0.113
0.081
0.065
0.016
0.032
0.048
0.097
0.048
0.129
0.065
0.065
0.065
0.097
0.065
0.032
0.048
0.113
PROPORTION ( p, u )
62
Date Shift / Time ANY CHANGE IN IN PEOPLE, MATERIAL EQUIPMENT, METHODS, ENVIRONMENT, OR MEASUREMENT SYSTEMS SHOULD BE NOTED. THESE NOTES WILL HELP YOU TO TAKE CORRECTIVE OR PROCESS IMPROVEMENT ACTION WHEN SIGNALLED BY THE CONTROL CHART DATE
TIME
COMMENTS
np1+np2+………+npk K
Average proportion nonconfroming np =
np
UCLp
=
A point above the upper control limit (higher proportion nonconforming is generally a sign of one or more of the following 1. The control limit or plot point are in error 2. The process performance has worsened, either at that point in time or as part of a trend 3. The evaluation system has changed (e.g., inspector, gauge)
4.0400
A point below the lower control limit (lower proportion nonconforming) is generally a sign of one or more of the following 1. The control limit or plot point are in error 2. The process performance has improved (this should be studied for improvements that might be incorporated on a parmanent basis) 3. The measurement system has changed
UCLnp
=
np + 3
np ( 1 - np/n)
=
9.8702
LCLp
=
np - 3
np ( 1 - np/n)
=
-1.790
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
9.870
2
5
4
3
3
6
5
0
7
5
4
1
2
3
6
3
8
4
4
4
6
4
2
3
7
p
4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400 4.0400
LCLp
0.000
** Green cell only to be filled
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
0.000
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