Yield in Six Sigma is a classic process performance estimate. Calculate yield by using the equation below.
Yield = Output / Input
= 100% - [Scrap Rate]
EX: 20 parts with critical errors in random sample of 400 parts
Scrap Rate = 20/ 400 * 100% = 5%
Yield = 95 %
A preferred metric is the throughput yield
Learn more about the Lean Six Sigma principles and tools for process excellence in Six Sigma Demystified (2011, McGraw-Hill) by Paul Keller, in his online Lean Six Sigma DMAIC short course ($249), or his online Green Belt certification course ($499).