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Standard Deviation is a statistical measure that shows the average amount that values vary (aka “Dispersion”) from the mean.

A low Standard Deviation means that values cluster very close to the mean, while a high Standard Deviation means that values are spread out far from the mean.

For a better understanding of Standard Deviation 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 GoLeanSixSigma.com, 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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