Mathematics A-Level
critical value comparison
What critical value comparison means in Mathematics A-Level, as defined for WJEC.
Definition of critical value comparison
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Reference: WJEC
Comparing the sample r against tabulated critical values for sample size n at significance level α, rejecting H₀ if |r| exceeds the critical value.
Topics that use critical value comparison
Related terms
- linear association test
- Normal mean hypothesis test
- population correlation ρ
- Z-test statistic
- exclusion of formula derivation
- linear association scope
- non-linear relationships
- PMCC interpretation
Using critical value comparison in the exam
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