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Stratification is a data analysis technique where values are grouped into different layers (i.e., “strata”) in order to better understand data.

Data can be stratified by who (type of person), what (data types), when (the time or date data was collected), and where (the location data was collected).

For a better understanding of Stratification 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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