in addition to plotting subgroups averages and range, list the 3 main chart elements that need to be calculated and shown on the chart in order to construct an xbar r chart
Solution:
In addition to plotting subgroups averages and range, there are 3 main chart elements that need to be calculated and shown on the chart in order to construct an Xbar and r chart. These three elements are given as below:
We need to plot these three elements for the both Xbar and r chart. If the all points of these both charts lies within upper control limit and lower control limits, then we can say that the process is in statistical control.
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