χ² test stat is
- A
Σ (observed − expected)/expected
- B
Mean of observed counts
- Ccheck_circle
Σ (observed − expected)²/expected
- D
Σ observed/expected
Explanation
Standard chi-square test statistic.
AP Statistics· difficulty 3/5
χ² test stat is
Σ (observed − expected)/expected
Mean of observed counts
Σ (observed − expected)²/expected
Σ observed/expected
Explanation
Standard chi-square test statistic.
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