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The chi-square goodness-of-fit test is almost always:
ARight-tailed
BLeft-tailed
CTwo-tailed
DUntailed
Answer & Solution
Correct answer: A. Right-tailed
1. Evidence against the null shows up as a large test statistic.
2. A large statistic sits far out in one particular tail.
3. The goodness-of-fit test is almost always right-tailed.
4. A small statistic instead means observed and expected values agree closely.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 11 'The Chi-Square Distribution', sections 11.1-11.5_
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