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Calculate the upper control limit for an x-bar chart

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Six samples of subgroup size 2 (n = 2) were collected. Determine the upper control limit (UCL) for an X-bar chart if the mean of the sample averages is 4.7 and mean of the sample ranges is 0.35.

Factors for calculating control limits

n          A2           D3          D4

 2        1.880        0           3.267

 3        1.023        0           2.574

 4        0.729        0           2.282

 5        0.577        0           2.114

 6        0.483        0           2.004

Reference no: EM13903531

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