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A Quartile is a quarter of a data set. People divide data sets into quartiles in order to study things like the lowest performing 25% of a workforce, or the top 25% turn around times for shipping. The Box Plot is a great visual that makes use of quartiles.

For a better understanding of Quartile 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 Master Black Belt at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 30 years, she's helped leading organizations like Amazon, Charles Schwab and Marriott International, Inc. build problem-solving muscles with Lean Six Sigma to achieve their goals.
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