The process capability index $(\frac{C_p}{C_{pk}})$

Is the ratio of the range of values produced divided by the range of values allowed

Is the mean divided by the square of the standard deviation $($variance$)$

Defines the mean and standard deviation of the process

Should be $=0\mathrm{.}5$ for a capable process

Should be $<mtext\; id="EditorElement\_2922941"></mtext><mn\; id="EditorElement\_2922942">1</mn>$ for a capable process

Is the ratio of the range of values allowed divided by the range of values produced