Vocabulary

Understand the term. Connect the concept.

A practical dictionary of 512 AI, machine learning, mathematics, and programming terms from HerbDev’s AI Vocabulary app. Start with a definition, explore an example, then follow the concepts behind it.

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Variance

Statistics & Probability · Level 2 of 5

Variance

The expected squared deviation from a mean.

Its units are the square of the variable's units.

Example

Two sensors have the same average reading but different spreads.

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Audio transcript

Variance. The expected squared deviation from a mean. Its units are the square of the variable's units. For example: Two sensors have the same average reading but different spreads.

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This helps you interpret numerical evidence without overstating what it establishes.

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