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Control Chart For Mean And Range


Control Chart For Mean And Range
Control Chart For Mean And Range
© 2009 Vertex42 LLC Control Chart Template by Vertex42.com
Control Chart for Mean and Range
[Title or Process]
Quality Characteristic Average Thickness (mm), X-bar
Sample Size, n 5
k 3
Statistics from Data Table Process Capability
R-bar 4.360 Upper Spec Limit, USL 40
Process Mean, µ-hat 34.840 Lower Spec Limit, LSL 30
Process St.Dev., σ-hat 1.874 C
p
0.889
σ
X-bar
0.838 CPU 0.918
CPL 0.861
C
pk
0.861
Percent Yield 99.21%
Control Limits for X-bar Chart Control Limits for R Chart
CL
X-bar
34.840 CL
R
4.360
UCL
X-bar
37.355 CL+kσ
X-bar
UCL
R
9.219
LCL
X-bar
32.325 CL-kσ
X-bar
LCL
R
0.000
α 0.0027
ARL 370.4 samples
[Date]
CL, 34.840
UCL, 37.355
LCL, 32.325
29
30
31
32
33
34
35
36
37
38
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Average Thickness (mm), X-bar
Sample #
CL, 4.360
UCL, 9.219
LCL, 0.000 0
2
4
6
8
10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Range
Sample #
Control Chart For Mean And Range
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