How do you find the standard deviation of a process capability?

How do you find the standard deviation of a process capability? Computing the Standard Deviation Subtract the process average from each measured data value (the X i values) Square each of the deviations computed in step 2. Add up all of the squared deviations computed in step 3. Divide the result of step 4 by … Continue reading How do you find the standard deviation of a process capability?