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SPC Process Capability Cp, Cpk and Machine Capability Cm, Cmk.

In this lesson we calculate the confidence limits, i.e. confidence intervals for the index Cpk for the critical process capability. We also talk about the confidence level and the influence of the sample size on the confidence limits.

At the end of this lesson, you should be able to calculate and correctly document the confidence intervals of the critical machine and process capability.

Furthermore, you should know the influence of the sample size and the confidence level on the size of the confidence interval.

I wish you success,

Rolf Ihde

▬ Video Chapters ▬▬▬▬▬▬▬▬▬▬▬▬▬

00:00 - Learning Objectives
01:23 - Calculation of 90% and 99% confidence limits for the critical process capability index Cpk
08:49 - Confidence intervals depending on the sample size and the confidence number
10:59 - Key Messages