What is data normalization?

Updated May 15, 2026

Short answer

Normalization scales data into a standard range.

Deep explanation

It improves model performance by scaling features, often between 0 and 1 or using z-score normalization.

Real-world example

Preparing data for machine learning models.

Common mistakes

  • Applying normalization without understanding distribution.

Follow-up questions

  • Normalization vs standardization?
  • When not to normalize?

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