Vocabulary

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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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P-Value

Statistics & Probability · Level 2 of 5

P-Value

The probability under a null model of a result at least as extreme as observed.

It is not the probability that the null hypothesis is true.

Example

A test quantifies how unusual the measured statistic is under no effect.

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Audio transcript

P-Value. The probability under a null model of a result at least as extreme as observed. It is not the probability that the null hypothesis is true. For example: A test quantifies how unusual the measured statistic is under no effect.

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Why it matters

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

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