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Advanced SPC - Control Charts

  • 1.  Advanced SPC - Control Charts

    Posted 12/07/22 05:46 AM

    Hi! In the ‘Using Control Charts’ module in Advanced SPC (final BB course), I am confused on how to calculate the UCL and LCLs.

    For Q2, is the correct chart IMR as there is only 1 subgroup? Are we looking for the UCL for or x bar MR? How do we calculate this?

    For Q3, when I calculate UCL with the p-chart formula, I get 0.133 as UCL. Any ideas what I might be doing wrong?

    For Q5, where do I plug “5” subgroups in the UCL formula?

    For Q8, how does this differ from Q3?