Question: Results from the last four samples from a process are shown in the table. Calculate control limits for an R and X chart. Draw both

Results from the last four samples from a process

Results from the last four samples from a process are shown in the table. Calculate control limits for an R and X chart. Draw both charts and determine whether the process is in statistical control. Sample number 1 2 3 Observation 1 5 5.01 5.02 4.9 Observation 2 5.01 5.02 5.07 4.92 Observation 3 4.9 4.98 4.99 5.01 Observation 4 5 5 4.98 5.23 4

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