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1. What are the two factors used in calculating process capability indices for a process parameter?
Process priority and process variation
Process value stream map and measurement error
Specification limits and descriptive statistics of the process performance
2. What is the major difference between the Cp and the Cpk process capability indices?
Cp is used when common cause variation is present and Cpk is used with special cause variation is present
Cp is the index used with recent short-term data and Cpk is the index used with long term process performance data
Cp is the index for the best-case process performance and Cpk is the index of the current process performance
3. If the process performance data is attribute data, are the process capability indices determined?
The process capability indices are calculated using the formulas for Cp, Cpk, Pp, and Ppk
The yield is calculated and that yield value is used with a look-up table to determine the process capability
The process capability indices are calculated using descriptive statistics
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