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Control Chart - Xbar, Range
Date: February 23, 2016
Statistics     Capability    
R-bar 19.713   USL 83.5  
Mean 68.269   LSL 82.5  
St. Dev 8.475   Cp 0.020  
sX-bar 3.790   CPU 0.599  
    CPL -0.560  
    Cpk -0.560  
      Yield % 1.04%  
Xbar control Limits   R control limits  
CLX-bar 68.269   CLR 19.713  
UCLX-bar 79.640   UCLR 41.681  
LCLX-bar 56.899   LCLR 0.000  
a 0.0027      
ARL samples 370.4        
      X-bar Chart R Chart
Sample Average Range CL UCL LCL CL UCL LCL
1 52.187 64.670 68.269 79.640 56.899 19.713 41.681 0.000 Sample Size  5 80.670 16.000
2 60.147 36.000 68.269 79.640 56.899 19.713 41.681 0.000 Sigma Limit 3 76.000 40.000
3 42.666 64.664 68.269 79.640 56.899 19.713 41.681 0.000 80.664 16.000
4 68.947 25.483 68.269 79.640 56.899 19.713 41.681 0.000 77.483 52.000
5 76.272 1.937 68.269 79.640 56.899 19.713 41.681 0.000 77.362 75.425
6 76.727 1.547 68.269 79.640 56.899 19.713 41.681 0.000 77.369 75.823
7 76.756 1.355 68.269 79.640 56.899 19.713 41.681 0.000 77.441 76.086
8 76.883 1.257 68.269 79.640 56.899 19.713 41.681 0.000 77.588 76.332
9 77.107 1.061 68.269 79.640 56.899 19.713 41.681 0.000 77.629 76.568
10 77.227 1.094 68.269 79.640 56.899 19.713 41.681 0.000 77.823 76.730
11 77.450 1.128 68.269 79.640 56.899 19.713 41.681 0.000 77.972 76.844
12 77.520 1.020 68.269 79.640 56.899 19.713 41.681 0.000 78.124 77.104
13 77.768 0.633 68.269 79.640 56.899 19.713 41.681 0.000 78.037 77.404
14 77.873 0.334 68.269 79.640 56.899 19.713 41.681 0.000 78.023 77.689
15 78.064 1.018 68.269 79.640 56.899 19.713 41.681 0.000 78.569 77.551
16 78.183 1.003 68.269 79.640 56.899 19.713 41.681 0.000 78.722 77.719
17 78.369 0.996 68.269 79.640 56.899 19.713 41.681 0.000 78.835 77.839
18 78.591 1.032 68.269 79.640 56.899 19.713 41.681 0.000 79.152 78.120
19 78.625 1.198 68.269 79.640 56.899 19.713 41.681 0.000 79.261 78.063
20 78.852 1.401 68.269 79.640 56.899 19.713 41.681 0.000 79.559 78.158
21 79.010 1.490 68.269 79.640 56.899 19.713 41.681 0.000 79.732 78.242
22 79.277 1.954 68.269 79.640 56.899 19.713 41.681 0.000 80.237 78.283
23 37.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 58.000 16.000
24 74.939 15.344 68.269 79.640 56.899 19.713 41.681 0.000 79.344 64.000
25 77.461 6.000 68.269 79.640 56.899 19.713 41.681 0.000 80.955 74.955
26 37.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 58.000 16.000
27 67.517 64.060 68.269 79.640 56.899 19.713 41.681 0.000 80.060 16.000
28 43.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 64.000 22.000
29 55.347 64.785 68.269 79.640 56.899 19.713 41.681 0.000 80.785 16.000
30 55.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 76.000 34.000
31 56.222 64.665 68.269 79.640 56.899 19.713 41.681 0.000 80.665 16.000
32 55.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 76.000 34.000
33 76.340 1.188 68.269 79.640 56.899 19.713 41.681 0.000 76.944 75.756
34 76.530 1.196 68.269 79.640 56.899 19.713 41.681 0.000 77.102 75.906
35 76.668 1.178 68.269 79.640 56.899 19.713 41.681 0.000 77.276 76.098
36 76.835 0.968 68.269 79.640 56.899 19.713 41.681 0.000 77.359 76.391
37 76.943 1.132 68.269 79.640 56.899 19.713 41.681 0.000 77.489 76.357
38 77.097 0.985 68.269 79.640 56.899 19.713 41.681 0.000 77.568 76.583
39 77.282 1.014 68.269 79.640 56.899 19.713 41.681 0.000 77.789 76.774
40 77.442 0.906 68.269 79.640 56.899 19.713 41.681 0.000 77.932 77.027
41 77.649 1.016 68.269 79.640 56.899 19.713 41.681 0.000 78.071 77.055
42 77.721 1.005 68.269 79.640 56.899 19.713 41.681 0.000 78.230 77.224
43 77.925 0.977 68.269 79.640 56.899 19.713 41.681 0.000 78.376 77.398
44 78.117 0.996 68.269 79.640 56.899 19.713 41.681 0.000 78.707 77.711
45 78.234 1.131 68.269 79.640 56.899 19.713 41.681 0.000 78.797 77.666
46 78.447 1.291 68.269 79.640 56.899 19.713 41.681 0.000 79.116 77.825
47 78.481 1.355 68.269 79.640 56.899 19.713 41.681 0.000 79.195 77.840
48 78.885 1.703 68.269 79.640 56.899 19.713 41.681 0.000 79.574 77.872
49 78.717 2.187 68.269 79.640 56.899 19.713 41.681 0.000 79.917 77.730
50 52.172 64.450 68.269 79.640 56.899 19.713 41.681 0.000 80.450 16.000
51 60.282 36.252 68.269 79.640 56.899 19.713 41.681 0.000 76.252 40.000
52 55.944 64.277 68.269 79.640 56.899 19.713 41.681 0.000 80.277 16.000
53 55.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 76.000 34.000
54 46.140 64.047 68.269 79.640 56.899 19.713 41.681 0.000 80.047 16.000
55 64.654 30.000 68.269 79.640 56.899 19.713 41.681 0.000 76.000 46.000
56 42.593 64.372 68.269 79.640 56.899 19.713 41.681 0.000 80.372 16.000
57 68.531 24.633 68.269 79.640 56.899 19.713 41.681 0.000 76.633 52.000
58 42.689 64.755 68.269 79.640 56.899 19.713 41.681 0.000 80.755 16.000
59 68.851 28.644 68.269 79.640 56.899 19.713 41.681 0.000 80.644 52.000
60 37.000 42.000 68.269 79.640 56.899 19.713 41.681 0.000 58.000 16.000