The process capability index, also called the process capability ratio, is a statistical measure of how capable an engineering or manufacturing process is of producing output that falls within specified limits. It measures how much natural variation a process shows relative to its specification limits, allowing different processes to be compared by how well they are controlled, with higher index values indicating better performance. The concept of process capability is meaningful only for processes that are already in a state of statistical control.
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The process capability index, or process capability ratio, is a statistical measure of process capability: the ability of an engineering process to produce an output within specification limits.
In Branch: Probability and Statistics, Lead
is a statistical measure of process capability
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