Dear All

Do relationship exists between Cp & Cpk

Dear All

Do relationship exists between Cp & Cpk

Cp and Cpk are taken from the same set of data.

The Cp (process capability is the calculation of the best capability if the process were run centered on the spec limits.

Cpk (process capability index) is the calculation of the process mean in relation to the closest spec limit.

Dave

is there any proportional relationship exsists

Have a look at the 'More free files' (http://elsmar.com/pdf_files/) section.

Especially the files Cp.gif and Cpk.gif

Visual comparison (http://elsmar.com/Cp_vs_Cpk.html)

Visual comparison (http://elsmar.com/Cp_vs_Cpk.html)
Thanks for the link, Marc. I had been looking high and low for it in the files and attachment section - not realizing it's just under the nose.