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Null Hypothesis

Written by the Fiveable Content Team โ€ข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated September 2025

Definition

The null hypothesis is a statement that assumes there is no significant relationship or difference between variables being studied. It represents what we expect if there is no effect or relationship in reality.

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Null Hypothesis Definition - AP Psychology Key Term | Fiveable