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A one-way ANOVA test is always which kind of test?
ARight-tailed
BLeft-tailed
CTwo-tailed
DUntailed
Answer & Solution
Correct answer: A. Right-tailed
1. Only one direction of the F distribution counts as evidence.
2. A large F indicates evidence against the null hypothesis.
3. A one-way ANOVA test is always right-tailed.
4. So a high F statistic corresponds to a low p-value.
5. It is then likely that the null hypothesis will be rejected.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 13 'The F Distribution and One-Way ANOVA', sections 13.1-13.4_
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