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Thursday, July 2, 2015

How Is Cpk Calculated When the Subgroup Size Is 1?

Marilyn Wheatley 15 June, 2015

When data are collected in subgroups, it’s easy to understand how the variation can be calculated within each of the subgroups based the subgroup range or the subgroup standard deviation. When data is not collected in subgroups (so the subgroup size is 1), it may be a little less intuitive to understand how within-subgroup standard deviation is calculated. How does Minitab Statistical Softwarecalcu... Continue Reading

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