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Process Capability Indicators measure how closely Process Outputs align within customer specifications when using continuous data (time, weight, volume, etc). These measures involve comparisons of process standard deviation and process mean to customer requirements.

Cu, Cpl and Cpk are the capability measures for continuous data, with higher values being more desirable. Any number less than one indicates a process that is not currently capable.

For a better understanding of Process Capability Indicators and an overview of Lean Six Sigma, check out our Free Lean Six Sigma Yellow Belt Training, Green Belt Training or Lean Training.

Elisabeth Swan

Elisabeth is a Managing Partner & Executive Advisor at GoLeanSixSigma.com. For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.

Tracy O'Rourke

Tracy is a Managing Partner & Executive Advisor at GoLeanSixSigma.com. She is also a Lean Six Sigma Green Belt Instructor at University of California San Diego and teaches in San Diego State University’s Lean Enterprise Program. For almost 20 years, she has helped leading organizations like Washington State, Charles Schwab and GE build problem-solving muscles.