Hi All,

 

Could you please explain how to calculate the Cp, Cpk for the below mentioned data. its dervied from the team productivity for the week 1 -9. we would like to know about the capablity of the process

 

Week	Productivity
1	98
2	86
3	76
4	75
5	89
6	105
7	78
8	67
9	104

Hi Prakash

 

Please review the formula for Cp and Cpk calculations (covered in GB session). From the data, you will calculate mean and standard deviation. In addition to the data, you will need the specification limits.

 

Thank you!

Hi Mayank,

 

Thanks for the information.

 

Regards

Prakash

 

With out Specification limit you are not able to calculate Cp Cpk.

 

 

Hi Saurabh, you are absolutely right. 

Hi Prakash, for team productivity, Cp, Cpk calculation is not a great idea. You can go for Z calculation using a lower specification limit. Cp and Cpk are of use in processes where you have both sided limits (mostly manufacturing)