For the given sample, Mean Factor (A₂ ) =

Based on the sampling done, the control limit for 3-sigma x-chart are:

Upper Control Limit (UCL):

Lower Control Limit (LCL):

Based on the x-chart, the process is OUT OF CONTROL or IN CONTROL (please pick one)

What are the UCL and LCL using 3-sigma?

For the given sample size, Upper Range:

For the given sample size, Lower Range:

The control limits for the 3-sigma R-chart are:

Upper Control Limit:

Lower Control Limit:

Based on the R-Chart, the process is OUT OF CONTROL or IN CONTROL (please pick one)

Day Range R (mm) 4.0 4.8 Mean x (mm) 158.9 153.2 153.6 157.5 158.6 1 2 3 4 5 NO 4.1 4.8 4.7 Day Range R (mm) 4.0 4.8 Mean x (mm) 158.9 153.2 153.6 157.5 158.6 1 2 3 4 5 NO 4.1 4.8 4.7