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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Effect Size

Research Vocabulary · Level 2 of 5

Effect Size

A numerical measure of the magnitude of an observed relationship or difference.

Practical importance is distinct from statistical significance.

Example

A paper reports the improvement in error rate, not only a p-value.

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Audio transcript

Effect Size. A numerical measure of the magnitude of an observed relationship or difference. Practical importance is distinct from statistical significance. For example: A paper reports the improvement in error rate, not only a p-value.

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This helps you read papers critically and distinguish evidence from claims.

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