Question: Process capability indices, such as Cp and Cpk , are used to assess how well a process performs relative to its specification limits . These

Process capability indices, such as Cp and Cpk , are used to assess how well a process performs relative to its specification limits. These indices reflect the consistency and centering of the process output.
Which one of the following statements is true regarding process capability indices?
Cpk can only be used when the process centerline matches the specification centerline.
The larger the Cpk, the greater the proportion of units that meet specifications.
The value of CD increases as the process is centered to the target.
A Cpk value of one is ideal, meaning all units meet specifications.
The value of Cp is always less than or equal to the value of Cpk.
Process capability indices, such as Cp and Cpk ,

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