Mathematics A-Level
actual significance level
What actual significance level means in Mathematics A-Level, as defined for WJEC.
Definition of actual significance level
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Reference: WJEC
For discrete distributions, the value equal to P(X in critical region | H₀ is true), which may be strictly less than the nominal α.
Topics that use actual significance level
Related terms
- binomial hypothesis testing
- contextual interpretation
- critical region
- nominal significance level
- null hypothesis
- p-value
- significance level
- tail probability calculation
Using actual significance level in the exam
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