Six samples of subgroup size 4 (n = 4) were collected

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Six samples of subgroup size 4 (n = 4) were collected. Determine the upper control limit (UCL) for an X-bar chart if the mean of the sample averages is 4.7 and the 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
  • 8 years ago
Answer for: Six samples of subgroup size 4 (n = 4) were collected
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