Outlier
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What does it mean?
An outlier differs markedly from other observations or an expected pattern. Detection depends on method and context.
Think through an example.
An everyday example
Most sessions last 10–40 minutes, but one lasts 900. You investigate whether it remained open or was recorded incorrectly.
Test your understanding.
True or false?
An outlier must be a data-entry error.
Make the next connection
Explore related concepts to deepen your understanding.
Sources and further reading
Explore the foundations and methodological details in these resources. Examples on this page were created for illustration.
- OpenStax Source in EnglishBox Plots