The following data show the values of sample mean X and the range. R for the samples of size 5 each. Calculate the values for central line and control limits for mean-chart and range chart and determine whether the process is in control. Sample No 2 5 7 8 10 Mean (X) 11.2 11.8 10.8 11.6 11.0 96 10.4 9.6 10.6 !0.0 Range (R) 4 5 7 4 8 7 (Conversion factors for n = 5 are 4, 0.577, D; = 0 and D. = 2.115)

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The following data show the values of sample mean X and the range. R for the samples of
size 5 each. Calculate the values for central line and control limits for mean-chart and range chart and determine
whether the process is in control.
Sample No
2
5
7
8
10
Mean (X)
I1.2
11.8
10.8
11.6
11.0
96
10.4
9.6
10.6
10.0
Range (R)
4
7
4
8
4
7
(Conversion factors for n= 5 are 4, = 0.577, D; = 0 and D. = 2.115)
Transcribed Image Text:The following data show the values of sample mean X and the range. R for the samples of size 5 each. Calculate the values for central line and control limits for mean-chart and range chart and determine whether the process is in control. Sample No 2 5 7 8 10 Mean (X) I1.2 11.8 10.8 11.6 11.0 96 10.4 9.6 10.6 10.0 Range (R) 4 7 4 8 4 7 (Conversion factors for n= 5 are 4, = 0.577, D; = 0 and D. = 2.115)
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