2/14/2023 0 Comments Minitab icc calculation![]() If we click the Estimate button in the dialog box that comes up, we can see the default methods used in Minitab:įrom the dialog box above, we can see that Minitab uses the Pooled standard deviation when subgroup sizes are greater than 1. Then, in my next post, I’ll show you how to calculate Cpk.įor data that follow the normal distribution, we use a Normal Capability Analysis ( Stat > Quality Tools > Capability Analysis > Normal). So in this post I will show you how to calculate Ppk using Minitab’s default settings when the subgroup size is greater than 1. Michelle Paret already wrote a great post about the differences between Cpk and Ppk, but it also helps to have a better understanding of the math behind these numbers. In technical support, we frequently receive calls from Minitab users who have questions about the differences between Cpk and Ppk. ![]()
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