Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In process improvement efforts, the process capability index or process capability ratio is a statistical measure of process capability: The ability of a process to produce output within specification limits. The concept of process capability only holds meaning for processes that a ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In process improvement efforts, the process capability index or process capability ratio is a statistical measure of process capability: The ability of a process to produce output within specification limits. The concept of process capability only holds meaning for processes that are in a state of statistical control. Process capability indices measure how much "natural variation" a process experiences relative to its specification limits and allows different processes to be compared with respect to how well an organization controls them. Process capability indices are constructed to express more desirable capability with increasingly higher values. Values near or below zero indicate processes operating off target (hat{mu} far from T) or with high variation.