The number of degrees of freedom for a chi-square test depends on:
AThe order of the rows
BHow chi-square is being used
CThe size of the alpha level
DThe colour of the data
Answer & Solution
Correct answer: B. How chi-square is being used
1. Different chi-square tests count degrees of freedom differently.
2. The parameter df is the degrees of freedom.
3. It depends on how chi-square is being used.
4. A goodness-of-fit test and a test of independence therefore use different formulas.
_Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 11 'The Chi-Square Distribution', sections 11.1-11.5_
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