Six samples of subgroup size 7 (n = 7) were collected.
Six samples of subgroup size 7 (n = 7) 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 […]