Calculating Combined DPMO and Sigma Level for Two or More Different Work Areas

B

Blake Slayton

#1
Hello All,

Did I quick search but didn't find this topic posted (at least by thread title anyway).

I have two different work areas that make different products which have different quantities of "Total Number of Opportunities per Unit." Obviously I can calculate the DPMO and Sigma level for each individually, but how do I calculate them both as a whole (entire company), other than simply averaging the two results?

Thanks!


Blake
 
Elsmar Forum Sponsor
B

Blake Slayton

#3
It's a simple average of the averages problems.

Sum the defects from both plants and divide that number by the sum of the opportunities.

Don't just average the averages...
Thanks, Bev! I will give that a try.

Another thing I thought I could do was simply add the two DPMO values and get the Sigma Level from that. Would that work as well?


Blake

:thanx:
 

Bev D

Heretical Statistician
Staff member
Super Moderator
#4
Another thing I thought I could do was simply add the two DPMO values and get the Sigma Level from that. Would that work as well?

:thanx:
Well remember dpmo is a ratio so simply adding the dpmo numbers is not mathematically correct.
 
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