The One Proportion test is a hypothesis test that can be used to determine whether a process is performing at the level of an established standard. It provides a way to determine if there is a statistically significant difference between the standard and a particular data set or whether the difference is due to random chance.

An example would be testing if a vendor that has guaranteed 48 hour delivery is performing as promised.

For a better understanding of the One Proportion Test, check out our Black Belt Training & Certification Course!

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. For almost 20 years, she's helped leading organizations like Washington State, Cisco and GE build problem-solving muscles with Lean Six Sigma to achieve their goals.