S
SLEEPYMUM
Hi Folks,
Hope someone can help me, myself and a colleague cannot come to agreement on what the subgroup size should be when calculating Cpk in Minitab.
We have taken 10 samples containing 32 parts (32 cavities in the tool, each sample contains 1 part from each cavity).
When calculating individual cpk values from the above, I enter in the field "cavity" as the sub group size as this is the subgroup that I want to analyze.. Is this correct
When I want to look at combined Cpk should I enter in 32 as the subgroup size or 10 or cavity? - This is the one that is causing the most confusion :mg:
Hope someone can help me, myself and a colleague cannot come to agreement on what the subgroup size should be when calculating Cpk in Minitab.
We have taken 10 samples containing 32 parts (32 cavities in the tool, each sample contains 1 part from each cavity).
When calculating individual cpk values from the above, I enter in the field "cavity" as the sub group size as this is the subgroup that I want to analyze.. Is this correct
When I want to look at combined Cpk should I enter in 32 as the subgroup size or 10 or cavity? - This is the one that is causing the most confusion :mg: